>>6352027
Tank: The Black Dog
Commander: Sgt Macheath aka Mack The Knife, big huge Scottish-American whose extended family back home suffered quite a lot before the U.S. finally waded into the war. He has been itching to fight for a long while, and sometimes frightens the crew with his brutality - he has a Sykes-Fairbairn combat dagger and (inexplicably) a large meat cleaver, and likes to fight with both of them whenever he has the chance to use blades instead of bullets.
Gunner: Cpl Potter aka Pot-Shot, smokes like a chimney whenever he can get out of the tank long enough, loves to gamble also and will take every opportunity to talk someone into a game of cards to possibly win more cigarettes playing poker, spades, or even just 'War'
Loader: Pvt Potter, aka Piss Pot, the Gunner's younger brother, drinks like his brother smokes, and got his name from an incident where he soiled himself, Macheath promised he would get a better nickname the day he killed a German with his own gun, and if he kills one with a knife he gets to call Mack 'Piss Pot' in perpetuity with no repercussions
Driver: Pvt Nelson, cool and collected, direly cynical, reads lots of poetry and can recite it with perfect, eidetic recollection, believes you're all going to die and that you probably deserve it
Asst Driver: Pvt Cage, a greaser-type from NYC, comes from destitution, knows how to juggle, throw knives, and do trick shots because his parents were both circus performers and sometimes clowns, has a horrible phobia of rats

>>6352030
Solid ideas, although I don't think two brothers would be allowed in the same unit, correct me if I'm wrong. Also it should be "MacHeath." Bummer that this is Sherman Qst instead of Tiger Qst but so be it.

My replacement for the loader:
PFC Krieger, a ranch-hand from out West. Gets asked to translate all the time but doesn't speak a lick of German. The campfire cook of the crew, in addition to being handy with all sorts of pistols & carrying a few tucked away on his person, whether he managed to sneak them across the Atlantic or looted them from the dead is unclear.

>>6352033
Oh yeah, I like that!

Also addendum: I think Mack should have visions(?)/hallucinations(?) of a black hound the size of a horse following your tank around, which he insists is a faerie omen that he is here to bring death to the Germans wherever he goes (hence the name of the tank), whereas Potter thinks he is mentally insane and Nelson believes it's a manifestation of Mack's many sins trailing behind you until it can drag him to hell, and Cage thinks it's a bunch of different stray dogs that just happen to be around because it's a warzone.

>>6352043
If the QM is in favor I'll back that, with Krieger assuming it's just the alcohol addling his mind. Perhaps Nelson studied at a seminary but dropped out due to a lack of faith, until the war restored his convictions.