I've been here since 1977. Taint no such Special Training Regiment here.
>>>He said the tank is "compartmentalized." "If a round by chance penetrates, you have compartments that protect other crew members."<<<
There is a Driver's compartment, a turret and an engine compartment. There are no compartments as this guy represents. There are some very potent RPGs around and have been for years.
The writer is probably using this quote (which isn't exactly right anyway) to refer to the amored storage compartments in the aft turret - which ARE designed to let the rounds explode, but "vent" the explosive forces outside (providing the access covers are shut!) so the crew can survive.
The Special Training Regiment is for special needs 1812's who used to ride the short bus to school.