Point of corps?

[es333]

I'm playing as Estonia, captured Leningrad and liberated Finland from the Soviet occupation, together with Germany. I'm stuck in Lapland as the amount of Soviet troops there is massive + my units always have "lack of supply".

I only have 1 theatre and all my units are all attached to that. Should I create corps and attach 4 divisions (3 inf 1 art) to each corp and then attach the corps to my theatre? Would that improve anything or is there no point?

 

[Didz]

Wtach this video.

It should tell you everything you need to know about Corps, Army's; Army Groups and Theatres.

The trait that has an direct impact on supply is 'Logistic's Wizard', so leaders with that trait will help with supply, as will 'Commando'

 

[Iwo Jima]

Organizing "deep" OOB, you gain additional bonuses from from oficers traits and rank abilities. But it also consumes your oficers pool. This increases maximum range from HQ to divisions also.

 

[browd]

The largest benefit comes from assigning a high-skill general to command an army group. Army group commanders provide -5% supply consumption per skill level, so a level-5 general (regardless of traits) commanding an army group will reduce supply consumption by 25% for the entire army group. It's nice if that high-skill general is also a logistics wizard, but the impact of his LW trait (-25% supply consumption while units are not moving) is greatly diminished when it reaches the division level -- just an additional 3.125% reduction at the division level if you do a full OOB (army group => army => corps => division). If you leave out the army level (attach corps directly to the army group), then the army group LW's trait impact at the division level is 6.25%.

So, given the limited number of divisions you probably have as Estonia, if you create an army group and attach 5 corps (with up to 5 divisions per corps, so the army group can cover up to 25 divisions) directly to that army group (leaving out the army level of the OOB), and assign a level-5 logistics wizard to lead the army group and logistics wizards (regardless of skill level) to lead each corps, you will see, at the division level, a 43.75% reduction in supply consumption (25% from army group leader skill + 6.25% from army group leader LW trait + 12.5% from corps leader LW trait) when units are not moving. If you don't have any high skill logistics wizards, then there is no army group LW trait benefit, but you still get (in this example) a 37.5% reduction at the division level.

If you have any spare logistics wizards after all of that, you could assign them to any divisions that have high supply consumption (such as armored, mech or mot divisions), but your divisions will take an immediate org hit when their leader is changed, which is usually a bad plan in the heat of combat.