The Type 1934A destroyers, also known as the Z5 class, were a group of twelve destroyers built in the mid-1930s for Nazi Germany's Kriegsmarine. Five survived the war.

The 3.7 cm SK C/30 was the German Kriegsmarine's primary 3.7 cm (1.5 in) anti-aircraft gun during the Second World War. It was superseded by the fully automatic 3.7 cm FlaK 43 late in the war.