My suggestions for the Ostheer:
Buildings:
F1.HQ
F2.Infantry Barracks
F3.Support Barracks
F4.Vehicle Depot
F5.Tank Depot
F6.Logistics Center
Buildables
F1:
-Pioniers (building unit, can be upgraded with a Minedetector)
-Artillery Spotters (recon unit, call "Wespe Barrage" ability that ignores the Wespe firing range)
-Upgrades: "Artillery Support" (enable "Wespe Barrage")
F2:
-Light Infantry (K98, Pzfaust ability, Grenade ability)
-Regular Infantry (K98, MP40 upgrade, Grenade ability)
-Sharpshooter (K98 scoped, camo ability)
-Heavy Infantry (G43 (better than K98), "Geballte Ladung" bundledgrenade ability, "Sniper" uprade (deploy Marksman like British), MP44 upgrade)
-Upgrades: "Sniper Support" (enable "Sniper" for Heavy Infantry)
F3:
-Mortar Trupp ("Barrage" and "Smoke Barrage")
-Support Trupp (K98, can be upgraded with either a Flamethrower or 2 light MG38 or 2 Panzerbüchsen (anti-tank-rifles), "Grenade" ability)
-MG42 Trupp (MG42, "Sperrfeuer" ability that supresses instantly and deals 2xdamage for a short period but is very expansive)
-Offizier ("Force retreat" ability, command aura, can be upgraded with MP40, "Inspire" ability (breaks suppression), "Smoke Barrage" ability)
-Upgrades: "Front Officiers" (Offizier buildable)
F4:
-Panzer III (very light tank, for recon, has an MG)
-StuG III (weaker than StuG IV)
-Hanomag (Upgrade 2xMG, can take 12 soldiers)
-Pak 38 (like wehrmacht pak)
-Maultier Panzerwerfer (halftruck with 10 rockets)
-Upgrades: "Rocket Artillery" (enables Maultier)
F5:
-Wespe (mobile Artillery, a lot weaker than hummel, "Barrage", not a single shot like StuH)
-Ostwind (like wehrmacht ostwind)
-Jagdpanzer IV/70 (tank hunter, slow, good damage, can take as much as Pz IV, but doesn't get hit as often as Pz IV)
-Panzer IV (starts with short gun, can be upgraded to longe barrel gun)
-Panther (like wehrmacht panther)
-Upgrades: "75mm Long Barrel" (for Pz IV), "Armored Skirts" (for Pz IV)
F6: you can choose only one of them!!!
-Blitzkrieg Phase (all units move and capture faster)
-Defense Phase (all units and buildings get more HP)
-Counter Attack Phase (all units get an accuracy bonus and and deal more damage)
Defenses (buildable by Pioniers)
-OP
-Sandsacks
-Barbed Wire
-Tanktrap
-Roadblock (Dig-In Doctrine only)
-Trenches (Dig-In Doctrine only)
-Splitterminen (Dig-In Doctrine only)
-Mines
-Sandsack Emplacement (like a Bunker but less HP, Medic or Mortar or MG Upgrade)
-leFH 18 (Dig-In Doctrine only)
Doctrines:
1) Blitzkrieg
left side: "Assault Troops"
-call "Sturmpioniers" (2xFlamethrower, heavy assault infantry)
-call "Mechanised Infantry" (a Hanomag with a Heavy Infantry Trupp)
-call a Tiger I
right side: "Support"
-"PzIV Massproduction" (PzIV cheaper and faster to build)
-Blitzkrieg (like wehrmacht)
-"Stuka Support" (like Henschel but with MG instead of anti-tank-fire)
2) Dig-In
left side: "Defense"
-call "Volkssturm" (very cheap infantry for emergency situations)
-"Eingraben" (Roadblocks, Trenches and "Splitterminen" anti-personal mines buildable)
-call an Elefant
right side: "Support"
-"To the last man" (troops can't be supressed and gain an offensive and defensive bonus while in their own territory)
-replace Pak38 with Pak40
-"Artillery Support" (leFH 18 buildable and also gives the "sFH Shot" (a single powerful artillery shot) ability)
3) Veteran Troops
left side: "Infantry"
-call "Panzerknacker" (AT-Infantry with Panzerschrecks and "Haftladung" ability (heavy at-democharge, short range for placement))
-"Veteran Infantry" gives all Infantry Vet-Lvl 2
-call a "Sniper Ace"
right side: "Tanks"
-"Hartkernmuition" (gives PzIV, Pak, Jagdpanzer and Panther the "Armored Piercing Amuntions" ability)
-upgrade Panther to "Panther G" (a bit faster and better more accurat)
-call a "Tiger II" Henschel
