The Skoda Model 1928 Gun was a Czech

Czechoslovakia

Czechoslovakia or Czecho-Slovakia was a sovereign state in Central Europe which existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992...

 long-range, dual-purpose cannon designed for the attack of static fortifications and coastal defence duties. About 20 were bought by Yugoslavia and possibly more by Romania

Romania

Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

, although this latter has not been confirmed from Romanian sources. Guns captured by Nazi Germany

Nazi Germany

Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

 after the Invasion of Yugoslavia

Invasion of Yugoslavia

The Invasion of Yugoslavia , also known as the April War , was the Axis Powers' attack on the Kingdom of Yugoslavia which began on 6 April 1941 during World War II...

 were used by the Heer

Heer (1935-1945)

The Heer was the Army land forces component of the German armed forces from 1935 to 1945, the latter also included the Navy and the Air Force...

as the 15 cm Kanone 403(j). It was tested by the Czechs as the 15 cm kanon NOa, but was not purchased.

The gun was mounted on a metal firing platform to give it 360° traverse. It was transported in three loads.