Infantry should just stay way back and walk in the tank’s tracks. 2nd/34th Armor 25th Infantry Division.
Not a good idea. That means the tank can’t actually defend to the rear. Countermeasure rounds have a surprisingly long range.
Modern systems like Trophy and the Russian Arena are actually infantry compatible and will not kill infantry advancing with or taking cover on the other side of a tank. Even today that WW1 function of a tank is still a thing.