WWII German Uboats upgraded their armaments based on Uboat vs. aircraft engagement policy changes as the war progressed. The Germans implemented a fight back policy where Uboats would stay on the surface and fight back with allied aircraft. The May, 1943 fight backorder number 483 was issued by Admiral Carl Donitz. The heavy deck cannons were either replaced with smaller caliber antiaircraft guns or eliminated entirely. The video will use historical records to outline the evolution of the German Submarine deck gun changes.

Text Correction at 13:29, I should have said unsustainable, not unattainable.