HEADQUARTERS 503d PARACHUTE INFANTRY

Office of the S-1

 

S-1 JOURNAL

 

(McNERNEY'S JOURNAL)

 

 

 

2 July, 1944

















The men were briefed by platoons at the sand table.  Each platoon leader had 30 minutes in which to brief his platoon.





First platoon was briefed at 0930-1000.




Lt. McRoberts briefed the company officers at 1430 using a sand table. 

The mission is Noemfoor Island.  Enemy strength at 2800, 1600 are combat troops, and they may be reinforced by a battalion from Manokwari only 70 miles across the bay and possibly by some troops escaping from Biak by barge at night. 

This last source of information did not make sense.  The reason that it became necessary to take Noemfoor Island, code name is  Table Tennis, was that the Japs were using this island as a staging point to send reinforcements to Biak.  That was the basis for the operation, code name Cyclone.  Biak was proving to be a hard nut to crack, and the issue was still in doubt.  The reinforcing of the Biak defenders had to be stopped.

Our battalion goes in D+3, Wednesday, 5 July.  The Bn jump order will be:  F Co, first; Bn Hq Co, second; D Co, third; and E Co, last.  Jump masters in F Co by plane will be: #1, Lt. McRoberts; “2, Lt. Miller; #3, Lt. LaVanchure; #4, Lt. Brock; #5, Lt. Clyde; #6, Lt. Flash; #7, Lt. Calhoun.  The company officers at this time were:  1st Lt. McRoberts, CO; 1st Lt. Tom Clyde, Ex. O; 2nd Lt. William Calhoun, 1st platoon ldr; 2nd Lt. Edward Flash, 2nd platoon ldr; 1st Lt. William LaVanchure, 3rd platoon ldr; 2nd Lt. Emory Ball,  ass’t 1st platoon ldr; 2nd Lt. Charles Attmore, ass’t 2nd platoon ldr; and 2nd Lt. Sidney Brock, ass’t 3rd platoon ldr. Lt. Col. John Britten, Bn CO; Capt. Lawson Caskey, Bn Ex O.

The 3d platoon will secure the area.  The 2nd platoon will be the advance party.  The 1st platoon will be the assault platoon.  The mission will be given about 30 minutes after we assemble.  The assembly area is 100 yards from point 2 near the middle of the strip.  Intelligence men will mark the Bn assembly area at point 2 with yellow smoke.  As soon as a platoon is assembled the platoon leader will notify the company commander by SCR 536 stating that the platoon is assembled and give the number of known injured men and the missing men.

Flying time  from Hollandia to Noemfoor is two and one half to two and three quarters hours.  There will be a time interval of ten minutes from the time we pass over the strip until we circle to the “Go” point.  With the 1st battalion  jumping D+1 and the third battalion jumping D+2 the jumping procedures should be well refined.  The landing area is the coral strip the Japs constructed at Kamiri Airdrome.  This sounds like a pretty hard surface to land upon.

The big worry is bombing by the Japs.  There are 139 bombers and 260 fighters at Halmahera, Sarong, and Manokwari.  Within six hours are an additional 100 bombers and 100 fighters. This report evidently does not take into account that our air forces had decimated the Jap air force.

Our Naval support consists of one heavy cruiser, five destroyers, and a number of submarines.

Noemfoor is approximately 18 miles long, north-south, and 12 miles wide.  There are a number of good trails.  Highest point is a mountain 670 feet.  General slope is to the west.  There are streams along the coast and many swamps around the streams and bays.  The interior is heavy rain forest.

Predesignated points on the map will be used in describing positions.  Use approximate distances in yards directly from the nearest point.

Jump casualties will be given first aid treatment by aid men.  The aid men will then join the platoon to which they are assigned.  If jumpers are missing do not look for them.  Regimental HQ Co and Service Co will be searching for and salvaging bundles and containers.  They will find missing jump casualties.

Namber strip to the south on the west coast is serviceable. Kornasoren Strip to the west is an emergency strip under construction. The strip we jump on, Kamari, is on the northwest corner of the island. 

Men will dig in as soon as we move into a position for the night.  Distances from Hollandia to:

Noemfoor Island                      415 miles
Japan Island 275 miles
Halmahera 850 miles
Sarong 670 miles
Manakwari 475 miles













 

 

The big worry is bombing by the Japs.  There are 139 bombers and 260 fighters at Halmahera, Sarong, and Manokwari.  Within six hours are an additional 100 bombers and 100 fighters.

This report evidently does not take into account that the USAAF had decimated the JAF.

The rumor is out that the 158th Infantry met no opposition, and our mission will be called off.  This better not be true.  Our hopes are still high.

Chicken soup for supper. Movie tonight, “Nine Girls”. The word tonight is that the 1st Bn jumps tomorrow morning.

 

 

2 JULY, 1944

 

 

From 0800 the enemy opened fire.  Two cruisers, 8 destroyers and several PT boats.  The noise of the gun fire was terrible.  With the shipping and planes combined, it is terrible.  Our Imperial Army, however remains calm.

Source: Diary taken from KIA, 7 August 1944 near BAWE
   



 

 

                 EQUIPMENT FOR JUMP

1.  All combat equipment.

2.  Musette Bag: 

a.   

Poncho

b.

Mosquito head net

c.

Rations

d.

Mosquito repellant, extra bottle

e.

Salt tablets, extra

f.

Waterproof food and clothing bag

g.

2 pair socks

h.

Cleaning and preserving equipment

i.

Leather gloves

j.

Pair of coveralls

3. Barracks bags will be tagged with men’s name, rank, and serial number plus his organization.  The bags will be stacked in the mess tent.  A duplicate tag will be placed in the barracks bag.  All equipment not being jumped will be placed in barracks bags.

4.  Rations to carry on jump:

a.

One can of C Rations with B unit can.

b.

One D Bar.

c.

One tenth of a 10-In-One Ration.

5.   APO is #704.  This is the same APO we had at Port Moresby.

6.   Jump list will be made out in triplicate.  One list will go to the Bn Adjutant, one will go to the pilot or crew chief, and one will be retained by the jumpmaster.

 7. Jump masters in "F" Co by plane will be:

#1:

Lt. McRoberts

#2:

Lt. Miller

#3:

Lt. LaVanchure

#4:

Lt. Brock

#5:

Lt. Clyde

#6:

Lt. Flash

#7:

Lt. Calhoun

 


 

3 July, 1944


15:00
"Flash! - The 2nd Bn will prepare to be able to leave for Cyclops Airdome at 04:00 hr.  Barracks bags will be turned in to R.S.O. immediately after supper and parachutes drawn.  Jungle hammocks will be rolled in bundles of 20, properly tagged, and will be dropped to us by resupply, C rations, "D" bars and “10 and 1” will be issued to Co.’s, and broken down to individuals.  Rations for one day will be jumped on person.

18:45

 

Flash No. 2 for the day.  We will revert to original plan.  3rd Bn move  out at 04:00 hr.,  July 4th.  The Bn. jungle hammocks have been struck, barracks bags begun to be transported to R.S.O. and camp in general struck.  I have heard bitching but the reaction to the news that the move is off ‘till July 5th tied the best of it. 

Instead of 03:00 hr reveille will be at 07:15 hr tomorrow."

Reports from Noemfoor are that the landing field is clear.  Heavy resistance is being encountered in the hill.  Jump altitude is 450 feet.

News has come down that we will jump tomorrow, 4 July.  This would be a good day to jump, the biggest Fourth we ever had. 

 

We packed our stuff into barracks bags and took them to the Bn mess tent.  After everything was stowed there word came that they had moved our jump back to the 5th.  We took our barracks bags back to our area and set up for the night.

 

   
   
   

 

4 July, 1944


4 July, 1944

08:00 

"There will be one change in Bn. plan of jumping.  Instead of flying in groups of two, echeloned to right rear, the planes will fly in line.  The 1st Bn had 51 casualties using the echelon right formation, because of the narrow jump field."

09:00

"Lt. Phelan’s plane conked out this morning, and just made it back to Cyclops Strip with the one operating motor smoking.  Lt. Phelan and his group of 17 3rd Bn. men will jump with the 2nd Bn tomorrow.  32 planes will jump the 2nd Bn., with one extra for Lt. Phelan.” 

 

When we went from Biak to Noemfoor, Phelan was on the "F" Company LCI.

 

"Barracks bags turned in again along with jungle hammocks, chutes drawn again, Battalion packed 49 bundles to be dropped.  There was one bundle for each rifle company, 42 bundles for battalion headquarters company, and four Red Cross supply bundles.  Breakfast was to be at 0300, load trucks at 04:00." 

 

Trucks were numbered to correspond to the plane numbers.  If you were to  fly and jump from plane number 17, then you would load in truck number 17.

   

22:00 

“Flash No. ? - The 2n Bn will not jump tomorrow." 

 

The high percentage of casualties in the 1st & 3d Bn caused by landing on the coral and cement-like mud of Kamiri Strip prompted higher HQ’s to cancel our jump.  The only places near suitable for a jump area are Noemfoor’s three air strips which were all the same composition.  The ground here proved a bit tougher than the 'chutists.  The 3 strips are swaths cut out of rainforest, which reaches up to 125 ft. high.

22:00 

"Breakfast will be at the regular time tomorrow morning."

   


Cream of wheat and dehydrated eggs for breakfast.  About 1000  we packed up again and moved everything to the storage tent again.  Salmon patties for lunch.  After lunch drew our chutes and adjusted them.  Many wrote letters, but we cannot mail them until we reach Noemfoor. Morale is high.  Everyone appears eager to go tomorrow.  Junk for supper. 

 

Most of us went to an engineering unit nearby and saw the movie “The Navy Way”.

 
The paratroopers jump in jump suits with web belts and suspenders, machete, entrenching tool, ammo, and grenades.  Riflemen carry 128 rounds.  Rifle grenadiers carry fragmentation and anti-tank rifle grenades.  BAR gunners jump with their BAR and 280 rounds of .30 cal ammo.  The assistant BAR gunner carries an M1 carbine with 105 rounds of ammo plus 280 rounds of BAR ammo.  The BAR ammo bearer carries an M1 rifle with 128 rounds of ammo plus 280 rounds of BAR ammo.  Each jumper carries two hand grenades.  One canteen is carried on the web belt.  The musette bag is carried in the parachute kitbag which hangs down in front below the reserve chute.  All of this, with a steel helmet, makes a heavy load.
   
   

 

4 July, 1944

 

Commenced to move position.  Entered the former FUHADA unit quarters.  Enemy naval gun fire is accurate.  This afternoon, the enemy made their first appearance in KANASI gardens.  NISHIKA’s Battalion immediately initiated attack, but failed.  Major KONORI and his men carried out successful night attack.  Majority of men were killed during the charge.  Detachment headquarters and other forces began night march.  Naval gun fire is pursuing our movement.

Source: Diary taken from body of enemy as five Japanese soldiers fell in vicinity of MENUPURI.
   

 

5 July, 1944

 

 


08:00

The 2nd Bn will turn their chutes in to R.S.O. , and draw jungle hammocks and barracks bags.  We are standing by for further orders. 

The belief is we will land on Kamiri Strip in C-47, or go to Noemfoor by LST.  Anything would seem plausible after four changes in two days.

10:00

"Camp is again completely set up, awaiting what may come."

   
Sausage, bread, and jam for breakfast -  great.  Waited all morning.  Just sitting and waiting.  What is going on?  We are supposed to be jumping this morning.  The lunch was poor.  Waited all afternoon.  Dark came and we went to the engineers’ movie again.  The movie was "Andy Hardy’s Double Life”.  Good smoko tonight.  Everyone brought out what they had stashed away.
   
   

 

 

5 July, 1944

 

Enemy planes flew over at low altitude chiefly to reconnoiter. 

At night, discussion was held as to future plans with Detachment Commander in charge. 

Decided to remain alive as long as possible and to hamper any enemy movements.

Source: Diary taken from body of enemy as five Japanese soldiers fell in vicinity of MENUPURI.

   

 

6 July, 1944

 


08:00

"Still no news from Reg’t. Hq. or the 1st & 3rd Bn’s that jumped on Noemfoor.  Improvement of camp and retention of combat gear at high efficiency occupied day.

08:00

"No change."

09:10 

 

"Flash! - 2nd Bn will be prepared to move from Ebli’s Plantation tomorrow.  We will go by C-47 planes to Biak, and from there take LCI’s to Noemfoor.  Barracks bags, hammocks, and complete kitchen equipment will be taken.  Particulars will be issued later."

16:00

"Breakfast at 03:00 hr. tomorrow.  Entruck at 04:00 hr in order of Hq, D,E,F for transportation to Sentani Drome and Cyclops Dromw:  2 Co’s per drome.

Bn Hq will have eight planes, each line Co, seven:  A corresponding number of trucks has been assigned to each Co.  We are due in Biak Is. tomorrow, 8th at Mokmer Strip.  From there we go under Navy control for transport to Noemfoor by LCI on the 10th, giving the Bn. one day on Biak."

   

 

Pancakes for breakfast.  Pancakes are considered a good breakfast as long as something sweet is served with them.  C Rations, biscuits, and canned fruit for lunch.  Inspection at 1300.  We’re just hanging in limbo.  Soup made from the gallon cans of C Rations and fruit, canned.  The show at the engineers tonight, “They Got Me Covered”
   
   

 

 

7 July, 1944

 

Pancakes, sugar and water syrup, and salt bacon.  A good breakfast.  Mail going out again, so the officers had mail censoring duty.  This was probably the most hated by the junior officers of all their duties.

We found out that jump casualties were so heavy in the 1st and 3rd battalion that they cancelled our jump.  We fly to Biak tomorrow morning.  From there we will be transported by boat to Noemfoor Island.  We hear there has not been much action on Noemfoor.  They cannot find the 2800 Japs.  Of course our Battalion is saying that we’ll just have to go find them.

Bully beef patties, bread, apricots, and synthetic lemonade for lunch.  Heavy rains started at 1400.  We stayed in our jungle hammocks much of the afternoon.  The  show tonight was very poor, “Jam Session”.  We get up at 0245, eat at 0300, and leave at 0400.  We are carrying our barracks bags with us.  Had a smoko and went to bed.

 

   
   

 

 

8 July, 1944

 

0300 

"Breakfast at 03:00 hr entrucked at 04:00 for move to airdrome.  Hq & "D" went to Sentani Drome, "E" & "F" to Cyclops."

06:45

"Weather closed in at Hollandia.  Will sweat it out in planes until take off time."

09:00

"Weather at Biak is “5”, or visibility zero.  If it doesn’t clear by 13:00, it will be too late to take off.” 

This is incorrect in part.  As explained above "F" Company did depart from Cyclops Strip and made it to Biak.

1300

"Weather still bad.  Personnel will spend nite in plane or under it, prepare for early take off tomorrow."

   

"F" Co. and "E" Co. went to Cyclops Drome.  Bn Hq. Co. and "D" Co. went to Sentani Drome.  F Co. left at 0730 in heavy weather.  The other companies were held back waiting for a break in the weather.  We were flying right down on the water and still could not see.  We were in plane #301.  After a long time the crew chief told me that the visibility was growing worse,  and we were going to turn and go back to Hollandia.  Just about this time we broke out into the clear and landed on Biak about 1100.  By 1230 they had moved us to our area by trucks.  The rest of the Bn did not come in until the next day, and they had to walk about two miles from Mokmer Drome.

Our area was a low coral hill.  It had once been covered with small trees,  but now these were denuded stakes. The shelling had been very heavy here.  We had difficulty setting up jungle hammocks, because the tree trunks were too small to support the weight of a man.  This area had been booby-trapped by our troops.  They had set these up with hand grenades.  We found several and removed them. George Harrigan unknowingly tripped one we had overlooked. Men were all around it.  I felt the heat on my back.  Emory Ball was a few feet further away chopping on a small tree trunk with his machete.  Just before the blade struck a grenade segment stuck the tree trunk near the spot where the blade hit.  No damage was done physically, but our faith in our fragmentation grenades did suffer.

Looming a half mile to the north was a ridge of great length with high cliffs towering above us.  We could feel great pity for the men who had to advance across this coastal plain to attack the cliffs.  Most of us set out for the cliffs to satisfy our curiosity and look for souvenirs.  At the base of the cliffs were many caves.  Some were large extending back to no telling where.  The large cave entrances were reached by descending into deep pits probably 50-75 feet deep and a couple of hundred feet in diameter.  Narrow trail wound down the sides of the pits to get to the bottom.  This gave perfect protection to the cave entrances from shell fire. 

C-47’s would drop 55 gallon drums of gasoline into the pits.  After a large number were dropped in they would drop an explosive device and have a raging inferno for a time.  The problem was that the Japs could get well out of harm’s way back into the depths of the caves.  We climbed down into the pits of a couple of caves and looked around the front parts. Many of the stalactites had broken from the ceiling and fallen to the floor.  We saw parts of Japs sticking out from under several, so the naval shelling had some effect here.  One large cave still had a fire burning burning in the pit.  The C-47’s had dropped gasoline in it the morning of our arrival.  This was the third burn-out for this cave. With all the stalagmites and the wreckage of the stalagmites among them it would had been very difficult to go back into the caves.  The face of the cliffs were pockmarked with small caves.  Crowning the cliffs were huge hardwood trees forming dense rain forest.

J Rations for supper.  No movies that we could find.  There was still heavy fighting taking place and some not too far away.  Any movies would be by small units in secluded places.

   
   

 

 

9 July, 1944

 

 

   

06:45

"Take off for Biak Is."

08:00

"Passed over Wadke Is. and Gelvink Bay."

0845

"Landed at Biak.  The Japs were 300 yds. from Strip.  P-40’s bombed and strafed their positions.  One P-40 was knocked down by a Jap Dual Purpose Gun while we awaited designation of bivouac area.  We are still attached to 24th Div."

0930 

"The bivouac is two miles from Mokmer Drome, where we landed.  Only two trucks are available and they will shuttle barracks bags while the personnel walk.”  "F" Company was lucky when they arrived the day before.  They rode to the bivouac area."

1400 

"Biak is 100% coral and the hammocks sure came in andy.  We are bivouacked along the final protective line of unit holding area above jetty."

1600 

"2nd Bn and attached units will spend the night on Biak and tomorrow take LCI’s to Noemfoor Is.  where the rest of the regiment is now stationed.

We are grateful for the manner in which the 24th Div. arranged our bivouac area, rations and water supply.  "

 

As a bastard regiment we usually had to fight for everything we ever received, and it is heartening to see a unit interested in our welfare.

8 July 44

"Co. broke camp and moved via truck to airport."

9 July 44

"Enplaned 0600 hr at Hollandia, Dutch New Guinea.  Arrived at Biak Island 0830 hr.  Marched 2 miles to bivouac."

9 July 1944

""E"  Company left Cyclops Drome (Hollandia) by air 0754hr and landed on Biak 0954 hr."

   

 

The "F" Company History is brief and inaccurate in that it states the company left Hollandia for Biak 4 July.

 

Eating field rations.  It rained early.  About 0930 everyone headed for the cliffs.  Ball, Marion Boone, Richard Lampman, Brown, and I climbed to the tops of the cliffs and went into the rain forest heading north following a well used trail. Climbing up the cliffs after we left the caves three back soldiers joined us.  They were members of a signal company.  The trees were of the 150 feet variety.  The mountain was coral.  The tree roots would be 3-4 feet above the ground where they joined the tree trunks.  The roots would radiate out in every direction putting out feeder roots in every pocket of soil in the coral.  Jagged coral was exposed in abundance.  The undergrowth was heavy.  it was cleared in a few places where trails led to a few trees.  Ladders had been attached to these trees leading up to platforms high up near the top of the trees.  The Japs had built these observation platforms to watch the sea.

The trail began a deep descent to the north.  After walking 400-500 yards we emerged into the open.  The descent of the trail leveled out and became a gradual descent.  This side of Biak was arid.  There was little grass, just scattered clumps, and scrubby trees 15-20 feet tall.  The trees resembled mesquite trees.  The trail was well worn, and there were signs that a lot of action had taken place along it.  Sound and power wire was still strung along the side of the trail.  Spent brass cartridges were everywhere.  The empties made it easy to spot the locations of the automatic weapons - or rather where they had been located. Bloody compress bandages were scattered and even some U.S. equipment such as helmets were abandoned.  We were sure that our front lines lay up ahead somewhere.

Brown picked up a good carbine.  These Jap carbines were rare.  When we left this morning I had my pistol.  None of the others carried a weapon.  The 3 black soldiers had a TSMG and two M1 carbines.  After we got started one of them told me that they had not fired these weapons and asked if it would not be better if some of us carried them.  Our group took the weapons offered and felt much more secure.

The trail intersected a well traveled two lane coral-surfaced road.  We turned left, west, and followed the road.  After traveling possibly a half mile we approached a low knoll covered with heavy bush.  The land was completely clear of brush for some distance around the knoll, but this was not particularly noticeable because of the scarcity of brush in this region.  As we neared the knoll we heard a click and immediately froze.  Peering closely into the bush we made out a brass round plate.  The truth suddenly dawned that we were looking at the business end of a water cooled 30 caliber machine gun. 

A voice came out of the brush demanding to know who we were and what we were doing there.  After we answered promptly and told them what they wanted to know they led us inside their fort.  The walls were built of rocks several feet high and quite thick.  What appeared to be a knoll was actually brush and small trees laid overhead forming an arbor.  The fort was defended by a rifle company reinforced by a heavy machine gun platoon.  They thought we had lost our minds.  There were many Japs in the area.  The captain commanding wanted us to spend the night and wait for two tanks coming in with supplies the next day.  We felt sure the rest of the battalion was in by now and knew that we were scheduled to leave Biak the next morning.  Colonel Britten would not take it too kindly if we were not there.  We thanked the captain and left,  anxious to get back to our home on the rocky knoll.  We retraced our steps very quietly and very rapidly. 

As we approached the forest again we began to breathe easier.  In fact we were actually breathing harder because of the gradual ascent toward the cliffs, our rapid pace, and the hot sun we were winded.  We noticed several P-40’s strafing and bombing the ridge a few miles east.  An L-5 liaison plane was flying around spotting for them.  He flew our way and then turned back.  We were almost to the rain forest when we saw a P-40 head our way.  Exhausted as we were we ran for the cover of the forest and upon reaching this cover dropped down to rest.  The P-40 zoomed over and a loud boom and concussion followed.  He had dropped a bomb about 40-50 yards in front of us of where we would have been had we not stopped. 

After being mistaken by our own troops for Japs we were really ready to get back, but we stayed in a crater until we were sure no planes were around.  We went over the ridge, down the cliffs, and back to our area.  As we neared our area one of the black soldiers asked Ball and me if we would come take “scarf” with them.  We politely declined saying their commander might not appreciate uninvited guests coming in for dinner. 

Soon he was back with an invitation from his company commander to eat with them.  We accepted and enjoyed a family style served meal at a table under a mess tent.  This was a signal company and they had an area walled off by canvas where they showed movies.  We saw the movie, “Stage Door Canteen.”

After we returned that night we learned that three "F" Company men who were unarmed ran into three Japs in a cave.  The Japs were armed.  Pvt. Robert Hobbs was hit in the leg and for his foolishness got a Purple Heart.  When foolish stunts are rated ours would top the list.

   
   

 

 

9 July, 1944

 

Afternoon we departed to establish wireless communications but was unsuccessful.

Source: Diary taken from body of enemy as five Japanese soldiers fell in vicinity of MENUPURI.
 
SHIMUZU force failed again in the second attempt to carry out night attack.


Source: Diary taken from
KIA, 7 August 1944 near BAWE

 

10 July, 1944

 


07:00

Four LCI’s will dock at jetty 300 yds from our bivouac area at 16:00 hr today.  There will be one company per LCI, plus 1/4 of ammo and rations, and a breakdown of 1st Bn Hq., 3rd Bn Hq and some Serv Co. personnel."

10:00 

"The 3 trucks supplied to the Bn. by the 24th Div. started shuttling the Bn. to the jetty, complete with barracks bags and extra impedimenta."

14:00

"Entire Bn at jetty awaiting LCI’s which are now off shore, to come in at 16:00 hr."

16:00

"Two LCI’s beached at jetty for Hq & "D" Co’s.  Each Co. lined up its men without barracks bags and had them load ammo on LCI’s up one gangway and down the other.  The Lt. Commander in charge of the 4 LCI’s said it was the quickest and most orderly manner in which his ships had ever been loaded."

17:00

""E" & "F" Co’s LCI’s beached and were loaded."

18:00

"Our 4 LCI’s pulled out into the harbor to join convoy for Noemfoor. It has Liberty Ships accompanying plus 8 destroyers."

19:00

"There is a bunk for every man on the LCI:  an average of 195 per craft."

 

“Co. boarded LCI 1700 hr. at Biak, Dutch New Guinea.  Sailed 1500 hr.  Destination Noemfoor Island, Dutch New Guinea.” 

Must have sailed backwards.

 “2nd Bn departed Biak Island