It can be bought on the RU server.
Non-historical, can only be applied to the E 75 TS. Priced at 4000 gold. Description:
“Kampfgruppe” Becken “- After reaching the front, the tank was incorporated into Becken Kampfgruppe, where it was modernized to survive the attacks of the enemy’s aviation. The vehicle was equipped with side shields at the top of the fuselage, improved anti-aircraft guns and enlarged fuel tanks, as its engine was a real fuel eater. Another significant improvement was the tactical bowl, in which the water was heated with heat from the exhaust pipe, which made it an integral part of the crew’s life.