Really? you have no use for a maxim to lock an area down or use a force multiplier or the indirect fire of the mortar?
Maxim is a bad investment choice if playing against OKW. It will get outflanked since OKW spams volks which btw have doctrinal building demolishing cheap assault nades. Maxim will simply end up in OKWs arsenal to be used against you.
I find M3 being good at capping the cut off point on the way from chasing down retreating squads.