IJA "Reinforced" Divisions in EOS (plan)
Posted: Sun Aug 05, 2007 7:54 pm
The IJA was in transition in 1941/1942, as was the US Army. Just how to change was not entirely clear and the subject of major debates. For Japan there were also issues of what equipment could be afforded? IJA more or less followed French doctrine on tanks, which is they were infantry support vehicles, except to the extent Gen Yamashita had a following for his proposal (actually implemented) to create an independent tank corps (he actually formed it in Manchukuo late in 1942 - the corps having tank divisions as components). IRL the closest thing the Japanese evolved to a combined arms formation was an "independent mixed brigade" (confusing because the term had different meanings at different times) which had an organic tank battalion. The first of these formed about the time PTO erupted into general war - and Yamashita's proposal for a tank corps was also written in 1941 (after visiting the Eastern Front on the German side of the lines).
In RHSEOS we have moved Gen Yamashita up one level and put him in charge of the Southern Area offensive, including its planning. We assume he formed a committee just like he did IRL for Malaya - and we assume that committee was just as combined arms and joint as the one headed by Col Tsuji IRL was. [The whole EOS concept is based on what few changes that committee might be able to make in the period between mobilization in July 1941 and Dec 1941] One new concept I am introducing (for a technical reason - this is a rationalization of why it might have happened) is a combination of semi-motorized division and the Independent Mixed Brigade concept: specifically we take a semi-motorized division formation and attach a tank "regiment" (battalion) to it.
The REASON for this change is that code does not treat things the same if they are attachments. In particular, it is hard to get it to load a division and a tank regiment on a convoy - but the SAME number of squads as one unit are not a problem!
We also are taking the opportunity to reduce unit count: each such reinforced division comes at the price of a tank regiment that is 9999ed out. We have four cases:
a) 5th Division - combined with 14th Tank Regiment. This is a special case - it has too many MMG (as IRL) which eventually will attrit to normal - and it is the shining offensive unit of the Malay campaign. It really was supported by tanks - but they were not organic.
b) 48th Division - combined with 4th Tank Regiment.
c) 16th Division - combined with 7th Tank Regiment.
These two were the main divisional formations in the Philippines (unless 65th Brigade is also a division - a wierd case) -
and they really were supported by those two tank formations.
d) 54th Division - combined with 8th Tank Regiment. This is the major formation of the plan to conquer Oahu - and it has a problem: if it does get used for that it probably won't survive. But unless it has integrated armor it won't be able to load up in a way to even try.
In RHSEOS we have moved Gen Yamashita up one level and put him in charge of the Southern Area offensive, including its planning. We assume he formed a committee just like he did IRL for Malaya - and we assume that committee was just as combined arms and joint as the one headed by Col Tsuji IRL was. [The whole EOS concept is based on what few changes that committee might be able to make in the period between mobilization in July 1941 and Dec 1941] One new concept I am introducing (for a technical reason - this is a rationalization of why it might have happened) is a combination of semi-motorized division and the Independent Mixed Brigade concept: specifically we take a semi-motorized division formation and attach a tank "regiment" (battalion) to it.
The REASON for this change is that code does not treat things the same if they are attachments. In particular, it is hard to get it to load a division and a tank regiment on a convoy - but the SAME number of squads as one unit are not a problem!
We also are taking the opportunity to reduce unit count: each such reinforced division comes at the price of a tank regiment that is 9999ed out. We have four cases:
a) 5th Division - combined with 14th Tank Regiment. This is a special case - it has too many MMG (as IRL) which eventually will attrit to normal - and it is the shining offensive unit of the Malay campaign. It really was supported by tanks - but they were not organic.
b) 48th Division - combined with 4th Tank Regiment.
c) 16th Division - combined with 7th Tank Regiment.
These two were the main divisional formations in the Philippines (unless 65th Brigade is also a division - a wierd case) -
and they really were supported by those two tank formations.
d) 54th Division - combined with 8th Tank Regiment. This is the major formation of the plan to conquer Oahu - and it has a problem: if it does get used for that it probably won't survive. But unless it has integrated armor it won't be able to load up in a way to even try.