Light and medium mortars should be tweaked to be more interesting equipment that increase the dynamic of gameplay.
Give light mortars more base ammunition than medium mortars; and make light mortars consume less ammo from ammo boxes when resupplying. Light mortars do less damage, but they’d have a lot more ammo and can resupply more efficiently. It can be increased 20-30.
To compensate Medium mortars can have a base increase in their ammo, say 15. But Medium mortars would consume more from ammo boxes.
So light mortars deal less damage but have a lot more ammo, while medium mortars deal more damage but have less ammo.
I also think Mortar squads could have 1 more Mortar soldier added to the squad for a total of 3
Add missing mortars into the research tree
US: M1 Mortar
UK: Ordnance ML 3-inch Mortar. This can be foldered with the American medium mortar. Britain was not just some lackey and was a major power in this war; sometimes one wants to play as the UK
Germany: 8 cm Granatwerfer 34
Currently Germany has the Kz 8 cm Granatwerfer 42 as its medium mortar. This was a shortened and lightened variant of their standard issue mortar, the Granatwerfer 34. I think the Kz should be entirely replaced with the Granatwerfer 34. The Kz was made and used in much smaller numbers, a merely 1000. Now the light weight of the Kz is not a good argument for why they used that model over the 34, since the corresponding Soviet medium mortar 82-BM-37 weighs over 100 pounds the same as the Granatwerfer 34 and the Soviets carry, run, and whip it off their backs like its nothing. So replace the Kz with the proper Granatwerfer 34
Italy, add an Italian Mortar Squad into the Research Tree
Brixia Model 35
Medium Mortar- 81/14 Model 35 Mortar
Japan: Type 97 81 mm Infantry Mortar
Give Mortar squads Heavy Mortars as their unique squad building
US: M2 4.2-inch Mortar
UK: ML 4.2-inch Mortar, built by UK Mortar Squads
USSR: 120-PM-38 Mortar
Germany: Granatwerfer 42
Japan: Type 2 12 cm Mortar