Thank you very much, Hector!!! Yesterday I overwhelmed British AI with huge advantage because I gave up grenadier and P4 but used 2 mg42 in the early game. In fact, I found somehow I am never good at using grenadiers. I replaced them with flame-pioneer and pg, and optimize teching. And I notice why I can use OKW destroy UKF so easily because UKF's tanks can not penetrate JgPz IV in the mid-game. This is totally an army advantage.
Actually I believe Stug III G is even better to use than JgPz IV, for me. They both have 75mm canon with the same penetration but Stug III is much faster and cheaper. The meaning of Stug III instead of Pz4 is penetration. Of course, JgPz IV has more armor and HP. (I still miss Marder I or Geschutzwagen in COH1, high damage and fast speed)
Doctrine is also an interesting thing. I found I just could not play well in some doctrines. I never win a match using Close Air Support
I use Mobile Defense, German Mechanical, Spearhead and Storm Doctrine very well. I used Mechanical Assault in the past but I could not use Stug III E well, which disturbs my teching so I gave up and use STUG III G with Panther or Spearhead's tiger a lot.
All right, I will start playing against players since I have beaten all allies armies using axis. I have found that axis troops has more diversities. Unlike allies always spam units, axis has more combinations.
OST has Grenadier with K98 or LMG42 or G43, PG with STG44, Pioneer with flamethrower or MP40, Assault Grenadier with MP40, Stormtroopers with STG44(camouflage and sprint ability) to choose.
OKW has SturmPioneer with STG44, VG with K98, PF or Scavenge infantry with G43, Fallschirmjäger with FG42, Obersolden with LMG34 to choose.
Why playing agains Ai ?
Try 1 vs 1 mode , its far more interesting and people actually think not like cpu , so enemy always have at gun or mines in entrance to stop jp4 rush.
Also CPU is cheating it see everything you do , where are you get bonus resources but his tactical thinking is at level of 10 years child (build counter to units that are on field not combined arms that fight agains all threads)
Ok i´ll go on topic.
Ostheer.
1. Sniper - his fire rate is great , he bleeds mp , and have stun shot ability that often force enemy to retreat. If you have micro for him , he´s great
2.versatile - no need to say more , best mines , great generalist infantry (grens get engine damaging faust , lmg), great tanks
3. team weapons. Mg42 hhve best supression , best damage and atvet 1 its incendiary rounds can kill every vehicle lighter than t70 (and even damage t70)
Their mortar will be best mortar after leigt nerf
Theri at gun have good penetration and at vet 1 it gets stun rounds
4. Tanks . Their tanks get get me out of here blitz, are often better thant their counterparts (t34 and p4) but also they cost more. Several doctrines give then smoke so they can safely retreat.
5.Mobile reinforcement - halftruck
6. They dont have -33% resource penalty like okw have
7. Doctrines. Theri best doctrines are
SCAS (becuase munny conversion and plane cheese)
mobile defense (cheap ifantry and good mid game with puma)
elite ("cheaty" vet 3 tiger for only 800 MP and also some other stuff like smoke , g43 , stun nade)
mechanized assault - while i dont recommend ass grens (normal are better) i like stug e and tiger , also haftruck with panzergrens is situaional but useful
lighting war and spearhead - useful abilities and tiger
OWK
1. Teching buildings - they give you something free like defense or heal
2. unit specialization - leigt is great howie , puma is great vehicle counter , jp4 id great agains tanks , obers are good agains ifantry , but often their units are also weak agains something other
3. Sneaky At guns , good howitzer , cheap but doctrinal mg make them effective (but worse as ostheer) in combined arms
4. good elite infantry (jagers , obers ,fusilliere , fallshirms)
5. great but costy tanks (p4 have better armor , jp4 is better stug panther comes sooner than in ostheer , great kingtiger) , they also lack special abilites like ostheer gets (smoke , stunnign round on stug)
6. Good versatile mines
7. vet 5
I think each of then has its own pros and cons and both are fun to play and potent if you exploid their strengts and cover their weeknesess
Hope this helps you.
PS: Start ranked 1vs1 agains players , you may loose but it brings new challenges and if you loose dont be shy and post here some replays , were glad to help you