I would suggest using the values for units that are in the second edition game. It is a d12 system. The values are
French, minors, Soviet, Italian infantry, 1942+ Germans: 2-3 (at-Def)
German, British, US, Soviet Grds, Finn infantry: 3-4
Early war armor (Brit, French, Soviet, minor): 5-4
Medium Armor (German, 42+ Soviet, US, 42+ Brit): 6-5
Heavy Armor (42+ German, Soviet grds, 45+ US) 7-7
SS panzer: 8-8
Artillery: 5-5
AT Guns: 0-5
Fortifications: 0-5
Attached is the German country chart from the second edition game - it has d12 combat values for more units listed: