Britain and Italy may be subfactions but they should feel unique instead of purely being America and Germany’s lackey. When I play as British and Italian units I want to feel like I’m part of that faction. British and Italian Engineers should have their own unique Engineer buildings. This helps to flesh out Britain and Italy as subfactions so they feel like a unique choice
First for Britain rename their low BR AT gun to the Ordnance QF 6-pounder. America and Britain both used this AT gun but Britain developed it and then shared it with America. In American service it was the 57mm M1 gun.
Next give Britain its own MG Nest and Heavy Machine Gun Nest.
The Vickers Machine Gun was Britain’s standard medium machine gun in service since 1912. There were attempts to replace it but it remained in service throughout the war.
The Besa Machine Gun was Britain’s standard vehicle mounted machine gun used on many vehicles. A larger more powerful variant was developed using 15mm rounds. This would be a Heavy Machine Gun
Now onto Italy,
The Breda 37 was Italy’s standard medium machine gun
The Breda Safat was the standard aircraft machine used on many Italian planes.
The Breda 20/65 mod 35 was Italy’s standard light AA gun.
Cannone da 47/32 would be Italy’s early AT gun
Cannone da 75/32 would be Italy’s late AT gun