From: The House of the Mouse
Things for AP's:
Buy support units- Tank Bns, Ski Bns, RR Const Bdes, Sapper Regts. Lots of Sappers & RR Const Bdes. RR Construction units help units dig in, they're not just for repairing railroads. Get them built asap so that they can absorb replacements and train up for Winter (you're actually a bit behind schedule for that, so get cracking).
Use caution when building more divisions, or you will dilute your replacements and end up with a bunch of understrength, unready divisions. Also, don't put all of the tank bde's you get on Refit all at once, just a few at a time so that once again you don't dilute your tank replacements into a bunch of poorly equipped units.
Check your leaders in the CP- I sort by initiative, since a high initiative leader will also have good stats in at least some other other areas (you don't find high initiative turds). See who's currently unemployed and highly rated, and put them into your Army & Front HQ's.
Check your HQ's in the CP and see if some armies are overloaded and others under-utilitized, and even things out by transferring units.
Save some AP's for forming Cavalry Corps- they can be formed in December by stacking 3 cav div's together. I forget the AP cost, but IIR it's around 15-20 AP per corps. You can attached up to 3 non-artillery support units directly to the Cav corps- put in tank bns, sappers, and ski bns, and the Cav corps become decent mobile units (better than tank Bdes, or even early Tank Corps, which you can build around March or so by combining 3 tank bde's).
One more thing: I don't think you can do amphib assaults west of Sevastopol until later in the game, so Operation Annoyment might be a non-starter.