so for all intents and purposes, you get given one (1) tank of your choice designed and/or manufactured before 1945.
You are free to modify it with modern components but you cannot change major parts (superstructure, turret rung, suspension setup). You can change the turret only if you need to do so but do remember the strain of new guns is fuckhuge compared to WW2 era ones. You can also slap more modern things on it (eg atgms and ERA). Discuss how you'd use your tank in an active war zone.
For example:
I'll take an M22 locust, and switch out the gun for a Bushmaster Mk44. MILAN ATGM on the top of the turret, ERA on the front of the hull. basic electronics (ir detection, modern sight (IR, Heat and telescopic with
rangefinder). The engine would be swapped for a 6.0 LS V8, suspension reinforced to deal with the added weight.
As for using it, urban terrain is gonna be my play ground. Get close and personal with MBTs and slap them in the ass using the bushmaster. Small size and high speed means getting a hit is harder than it looks and being able to hide in buidings means other tanks passing by might just not see you.