Soviet
Soviet grenades RG-42, F-1, RPG-40, RPG-43
Soviet rocket launchers are the same trophies as the Reich, or a US/British license
Uniform Soldier's Gymnastyorka model 1943 and 1940 and 1935/36
Light Machine Gun: DP, DPM,
Submachine gun PPSh, PPS
Rifle: Mosin rifle, SVT-40
Mortar:
Battalion Mortar BM-43, BM-41, BM-36 (M-37).
Regimental Mortar PM-38 (M1938 mortar), PM-43.
ROKS flamethrowers

US
Grenades: Mk II
Rocket launchers: Bazooka, Super Bazooka.
Heavy machine gun: Browning M1919, Browning M2
Light Machine Gun: Browning M1918
Submachine guns: Thompson, M3 Grease Gun
Rifles: Springfield M1903, M1 Carbine, M1 Garand, Johnson M1941
Flamethrower: M2
Mortars: M1 mortar, M2 mortar

no new GFX icon from new equipment categories

no new GFX icon for new equipment categories but I keep that in the back of my mind

Germany: STG 44,Kar 98 War Ver. (lower Production Cost).

Equipment and armament for Czechoslovakia/Slovakia
Rifles: Mannlicher M1895, ZB vz. 24, Zh 29, ZK 412
Submachine guns: ZK 383, KP vz. 38, Sa vz. 23
Light machine guns: ZB vz. 26, ZB vz. 52, UK vz. 59
Heavy machine guns: TK vz. 24, TK vz. 37,
Grenades: RG-4, RG-38
Rocket launchers: P 27 (Pancéřovka)
Anti-tank rifles: ZK 382, ZB vz. 41
Anti-aircraft weapons: ZB 60, VKPL vz. 36
Anti-aircraft guns: PLk vz. 22, 7,5cm PL vz. 37, 8cm PK vz. 37
Anti-tank guns. KPÚV vz. 34, KPÚV vz. 37, KPŮV vz. 38, Kanon vz. 53
Heavy artillery: 15cm howitzer vz. 25, 10,5cm howitzer vz. 35, 15cm howitzer vz. 37
Light artillery: 10 cm light field howitzer vz.14/19, 8 cm light field gun vz.17, 10 cm howitzer vz.30,
Mountain artillery: 10 cm mountain howitzer vz.16, 7,5 cm mountain cannon model 15
Mortars: 14 cm heavy mortar vz.18, 26 cm heavy mortar vz.17, 8 cm mortar vz.36
Uniform: https://www.kvhchotebuz.cz/dobove-jednotky/armada-ceskoslovenske-republiky1/v-stroj/

Sniper Battalions + Scopes you need to field them.

Perhaps you could add more depth to the planes? perhaps more kinds of modifications could be added to them? Such as heavy rocket rails, Large Anti-Air Cannons that can be mounted onto planes, and perhaps even a "jack of all trades" rail mount system, which adds maybe like 5% production cost yet adds a ton of statistics for different kinds of missions.

I would like helmets, cheap cost ww1 helmets like the pickelhaube or the ushanka for the soviets, moderate cost ww2 helmets like the Stahlhelm or the soviet steel helmet and maybe early modern helmets which would be expensive

add side arm's (aka pistols) and there ammunition and also add a battalion called "officer" and they're can only be one and you have to have one in each army. add helmets too

Poland
Anti tank carabine Ur and special amunition for them and new batalion anti tank carabine batalion