A Australian Sentinel tank with a twin barreled 25-pdr howitzer. This was installed to test the effects of high recoil on the tank to see if it was possible to mount a 17-pdr gun
A Australian Sentinel tank with a twin barreled 25-pdr howitzer. This was installed to test the effects of high recoil on the tank to see if it was possible to mount a 17-pdr gun