In reality gameplay wise there are only 4-5 different Cromwells. However I made it so that there will be 2 versions with a 6 pounder gun but one would have the 6 Pounder APDS whilst the other would not for balance purposes. That being said there were 2 different 6 pounder guns. The L/43 and L/50 version. I’ve seen pictures of both being used on both the Cromwell I and Cromwell III. Since L/43 was the most common it makes sense to have it on the most common 6 pounder Cromwell which is the Mk I and to make Cromwell III more different, it would have the L/50.
Cromwell I
6 Pounder Mk. III L/43 Main Gun (No APDS)
63.5mm + 12.7mm Hull Armour
Cromwell III
Introduction:
6 Pounder Mk. V L/50 Main Gun (Gets APDS)
63.5mm + 12.7mm Hull Armour
[Picture is of Centaur Mk I, Cromwell III is identical to this tank, just different and better engine, notice the L/50 version of the gun]
Cromwell IV
75mm QF Mk. V L/40 Main Gun
63.5mm + 12.7mm Hull Armour
Cromwell VII
75mm QF Mk. V L/40 Main Gun
88.9mm + 12.7mm Hull Armour
Cromwell VIII
95mm QF L/19 Main Gun
88.9mm + 12.7mm Hull Armour
:::
Secondary 12.7mm spaced armour behind the main armour, hull front
:::
6 Pounder Mk. III L/43
APCBC: 118mm @ 0m
HE: ???g TNT equivalent
6 Pounder Mk. V L/50
APCBC: 127mm @ 0m
APDS: 188mm @ 0m
HE: ???g TNT equivalent
75mm OQF Mk. V L/40
AP: 106mm @ 0m
HE: 666g TNT equivalent
95mm QF L/19
HEAT: 127mm @ N/A (5.6kg TNT equivalent)
HE: ???g of TNT equivalent
HESH: I think however it only came post war
:::
UK
BR I
Tetrarch
A13 Mk I, II
BR II
Crusader II
Valentine III
Matilda II
BR III*
Crusader III
Cromwell I, III, IV, VII, VIII
Churchill III , IV , V
BR IV
Churchill VII , IX, X
A34 Comet
Sherman Firefly
BR V
Black Prince
Centurion I