Guadalcanal Garrison Aug 7, 1942

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jmolyson
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Guadalcanal Garrison Aug 7, 1942

Post by jmolyson »

My research indicated the following units were deployed to Guadalcanal in support of Japanese airfield construction there:


Kure 3rd SNLF Detachment (as a Naval Guard Garrison)
11th Naval Construction Bn
13th Naval Construction Bn

I see no record indicating that the 81st Naval Guard Garrison was deployed there. Instead, Pacific Wreaks says
that this unit was in charge of the POW camp at Rabaul.

My research also indicates the following units were deployed to Tulagi (and the immediate surrounding islands)
in support of Japanese seaplane base there:


Kure 3rd SNLF Detachment (as a Naval Guard Garrison)
14th Naval Construction Bn
129th JNAF Airfield Unit


Comments?

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RE: Guadalcanal Garrison Aug 7, 1942

Post by spence »

The GAME has placed those extra units on Guadalcanal in order to make the scenario more of a contest. It has the same historical justification as placing the Prince of Wales and Repulse out in the Gulf of Siam on the 1st turn of the Grand Campaign so that the same bombers that bombed Singapore during the night phase can (well only 8 out 10 times or so) sink them during the day phase (with a torpedo attack in both phases no less).
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Buckrock »

ORIGINAL: jmolyson
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Elements of Kure 3rd SNLF supplied the original Tulagi garrison in May and then additionally for Guadalcanal in June '42. Further elements of 3rd SNLF as well as 81st Guard Unit troops and specialist units from Rabaul's 8th Base Force followed in July, being grouped administratively under the HQ of 81st Guard Unit. The 81st was then ordered in Aug to return to Rabaul, handing over control of the local garrison to the HQ of the 84th Guard Unit. The HQ and lead elements of the 81st reached Rabaul just as the US began their invasion landings.

Although the Guard Units contained some combat elements, their main function tended to be as administrative and service troops. On Guadalcanal and Tulagi, most of the fighting power for the garrison at the time of the US invasion still came from those elements originally allocated to the Guard Units from 3rd SNLF, which is why the SNLF troops tend to be mentioned in accounts covering the initial fighting.
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RE: Guadalcanal Garrison Aug 7, 1942

Post by BBfanboy »

ORIGINAL: Buckrock
ORIGINAL: jmolyson
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Elements of Kure 3rd SNLF supplied the original Tulagi garrison in May and then additionally for Guadalcanal in June '42. Further elements of 3rd SNLF as well as 81st Guard Unit troops and specialist units from Rabaul's 8th Base Force followed in July, being grouped administratively under the HQ of 81st Guard Unit. The 81st was then ordered in Aug to return to Rabaul, handing over control of the local garrison to the HQ of the 84th Guard Unit. The HQ and lead elements of the 81st reached Rabaul just as the US began their invasion landings.

Although the Guard Units contained some combat elements, their main function tended to be as administrative and service troops. On Guadalcanal and Tulagi, most of the fighting power for the garrison at the time of the US invasion still came from those elements originally allocated to the Guard Units from 3rd SNLF, which is why the SNLF troops tend to be mentioned in accounts covering the initial fighting.
Sounds like the Japanese were pulling out troops to send to Buna to march to Port Moresby.
The first reaction troops to the US landings involved the battalion sized "Ichiki Detachment". Do you know what unit they came from?
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Hrafnagud
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Hrafnagud »

The Ichiki Detachment was the 2nd Battalion, 28th Infantry Regiment with some added artillery and engineers. Its strength was 917 men.

The Ichiki Detachment was named after its commander, Colonel Kiyonao Ichiki. He commanded the 28th Infantry Regiment, which was originally part of the 7th Division based on Hokkaido. The 28th Infantry Regiment was intended to capture Midway; after the severe naval defeat at the Battle of Midway, they were rerouted to Truk.

After the 1st Marines landed at Guadalcanal, the Ichiki Detachment was landed by six Japanese destroyers at Taivu Point with orders to retake Henderson Field.
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Buckrock »

ORIGINAL: BBfanboy
Sounds like the Japanese were pulling out troops to send to Buna to march to Port Moresby.
The first reaction troops to the US landings involved the battalion sized "Ichiki Detachment". Do you know what unit they came from?
The bulk of the 81st Guard Unit weren't sent to Guadalcanal. It's main role was in support and security of the naval facilities for the Rabaul area, including the running of local POW camps as the OP mentioned. The detachment of the 81st sent to Guadalcanal in July was to oversee the administration and security of the new base being built on Lunga until a specific guard unit (the 84th) could be organised to take over. The return of the 81st detachment to Rabaul in early August was primarily because it had by then completed the hand over to the 84th. Most likely the 81st detachment just returned to rejoin its parent unit for further duties on Rabaul. There already were existing naval Guard Units responsible for the navy controlled areas in Lae and Buna, so I doubt the 81st detachment would have been needed there. There was however the upcoming Rabi (Milne Bay) operation tentatively planned for August, so it's possible the 81st was planning to send a detachment there to oversee the initial establishment of the new base, assuming it was captured of course.

Just in relation to the 81st detachment on Guadalcanal from Jul-Aug, it was reportedly less than 60 men, reinforced by two platoons (about 100 men) from the Kure 3rd SNLF before it sailed from Rabaul in late June to absorb the other SNLF platoons already garrisoning the Lunga area on Guadalcanal. Most of the SNLF platoons remained behind when the 81st detachment left in early August. I doubt the US Marines would have noticed any difference had the 81st stayed as well.

As for Cheeky Ichiki, all I can add in addition to what Hrafnagud mentioned is that the Ichiki Detachment was not originally part of the 17th Army (tasked then with New Guinea operations only) but had just completed a period of occupation duty on Guam and sailed on Aug 7th for Japan, likely to rejoin the detachment's parent 7th Division on Hokkaido. After news came through of the US landing on Guadalcanal, the detachment was ordered instead to Truk and became an emergency add-on to the OOB of the 17th Army. The only existing 17th Army combat units available at that time to deal with the sudden crisis were the Kawaguchi and Aoba detachments but they were on Palau and Mindanao and would've arrived too late to stop the US completing the partially constructed airfield on Lunga. So Ichiki got first crack, leading in the roughly 900 strong first echelon of his force via destroyer transport while leaving behind his 1400 strong second echelon to follow with his supplies on slower transports from Truk.

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RE: Guadalcanal Garrison Aug 7, 1942

Post by US87891 »

Near as can be determined, the early garrison of the Solomons comprised 3rd company of the Kure 3rd SNLF augmented by 1st platoon of 1st company and 1st platoon of 2nd company. The Mitsuwa AA Buntai was from 4th Base Force, by way of Palau, and was a Fleet unit supporting Yokohama Air Group, at Gavutu, and not part of the SNLF or Guard establishment. Elements of the 81st Guard Unit (Lt Yukio Endo)deployed to Lunga in order to assist in establishing the airfield. These included parts of the 85th Commo Unit (21) and 4th Meteorological Unit (7) augmented by a (combined) gun platoon and AA platoon from Weapons Company, Kure 3rd. Endo’s command (designated RXI Guard Force, 81st Guard Unit) departed Lunga for Rabaul, 2 August, leaving behind the Combined Gun Platoon under WO Tetsuzo Nakamura to augment the newly formed 84th Guard Unit. The 84th Guard Unit (Cmdr Masaaki Suzuki), was formed 1 July from elements of Kure 3rd SNLF, and other units, currently on Guadalcanal and Tulagi. The majority of Kure 3rd SNLF did not deploy to the Guadalcanal area. Rather it remained at Rabaul from where it participated in the ill fated Milne Bay Operation.

The best guestimate, from contemporary Japanese sources, as to the composition of Japanese forces on Guadalcanal, Tulagi, and Gavutu, on 7 August, 1942 is, perhaps;

Lunga: 1st Co, 84th Guard Unit (newly formed)
1st Pl, 1st Co, (newly formed on paper, no personnel listed)
2nd Pl, 1st Co, (newly formed on paper, no personnel listed)
3rd Pl, 2nd Co (46)(WO Takeuchi, Noboru) (formerly 3rd Pl, 3rd Co, Kure 3rd)
Gun Pl (WO Tetsuzo Nakamura) (2x Type 41 How, 3x Type-3, “8cm” DP)
11th Construction Unit (Capt Kanae Monzen)
13th Construction Unit (Lt Cmdr Tokunaga Okamura)
Marau Sound:
5th Pl, 2nd Co (WO Kikuo Tanaka)(38) (formerly 1st Pl, 2nd Co, Kure 3rd)

Tulagi: 2nd Co, 84th Guard Unit (formerly 3rd Co, Kure 3rd SNLF)
Command Pl, 2nd Co (WO Tsurusaburo Shigeta)
1st Pl, 2nd Co (WO Tsuneto Sakado) (formerly 1st Pl, 3rd Co, Kure 3rd)
2nd Pl, 2nd Co (WO Sadayuki Kato) (formerly 2nd Pl, 3rd Co, Kure 3rd)
4th Pl, 2nd Co (WO Yoshiharu Muranaka) (formerly 1st Pl, 1st Co, Kure 3rd)
Gun Pl (WO Obara) 3x Type-94, 37mm gun,

Gavutu:
Hama Unit, Yokohama Airgroup/Base personnel (Capt Shigetoshi Miyazaki) (142)
Hashimoto Construction Force (Shin’ya Hashimoto) (132) (from 14th Construction Unit)
Hara Construction Force (Inoure Hara) (51) (from 7th Construction Unit)
Mitsuwa Butai AA Unit (Toshichi Mitsuwa)(54) (from 4th Base Force)

There appeared to be substantial numbers of MGs, both 7.7mm and 13mm, available on Tulagi and Gavutu. These were, presumably, AA MGs along with MGs salvaged from Yokohama AG aircraft and the maintenance/armament shops. This may account for the strength of the defense, particularly given the numbers of technically non-combat personnel.
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Brady »

Image
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Buckrock »

It may well be a photo of the captured set the US Marines attempted to get into operation in the weeks immediately after their landing. They finally "suspended" these efforts when a SCR-270 was delivered at the end of August. Clearly such sophisticated technology as the "Type 2, Mark 1, Model 1, Mod 0" must have been beyond everyone's understanding at the time as neither side could get any use out of it on Lunga.
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Hrafnagud »

That was the radar set on Lunga Ridge. I believe the metal base is still there today.
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Brady »


"This may account for the strength of the defense, particularly given the numbers of technically non-combat personnel." My understanding is that everyone in Uniform was considered a Combatant as far as the IJN and IJA were concerned and they all received training to that end, even Laborers acted as combatants, idk in this specific case if that was true for the later, but I know historically in other battels this was true

How many laborers were present ?
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Brady »


Interestingly though, no one on that list seams to be the personal responsible for the Radar
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RE: Guadalcanal Garrison Aug 7, 1942

Post by jmolyson »

For me, the GAME is more fun with the historic OB in play rather than bogus play balance cheats.

If I want balanced opponents, i'll play checkers.

Thanks
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Alfred »

There are no bogus play balance cheats in AE.
 
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Brady »

There are but it kind of depends on your point of view as to weather or not they smell like that and some of them cut both ways, and there present in the historic game
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Alfred »

Put up the evidence or shut up.
 
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Brady »

[:)] I don’t want to to be the one that tells you there is no Santa
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Buckrock »

In the case of the 81st being on Guadalcanal in the starting OOB for Scenario 4, it might simply be that the particular sources used for the original scenario research suggested it was there on Aug 7th. I've seen sources in the past that can create a misleading OOB picture. Probably the only person who could really explain why the unit is placed there is the scenario designer.
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RE: Guadalcanal Garrison Aug 7, 1942

Post by Buckrock »

ORIGINAL: Brady
Interestingly though, no one on that list seams to be the personal responsible for the Radar
Amongst the base technical personnel on Guadalcanal was at least one radar specialist overseeing the set-up of radar for Guadalcanal. Another is mentioned as performing as similar task for Tulagi. I assume that once these radars were ready, they would have been manned by either locally trained base personnel or ones brought down from Rabaul who had some experience working with the "operational" radar that had already been established on New Britain.

ORIGINAL: Brady
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RE: Guadalcanal Garrison Aug 7, 1942

Post by US87891 »

ORIGINAL: Brady
Interestingly though, no one on that list seams to be the personal responsible for the Radar
The 85th Communications Unit was responsible for construction and installation of the radar system. 4th Meteorological Unit was responsible for charting air currents for proper orientation of the airfield runway (The 51st Communications Unit had the same responsibilities for radar installation in the Aleutians). The 85th completed the installation and returned to Rabaul 2 August, which is why the system was not operational and did not detect the air activity on the morning of the 7th. The radar system was scheduled to become operational, along with the airfield, on 8 August.
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