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The 28 cm SK L/40 "Bruno" (SK — Schnelladekanone (quick-loading cannon) L — Länge (with a 40 caliber barrel) was a German railroad gun. Originally a naval gun, it was adapted for land service after its ships were disarmed beginning in 1916. It served on the Western Front and on coast defense duties in Occupied Flanders during World War I. Belgium received four guns as reparations after the war. The Germans used two of those guns in World War II after Belgium's surrender during the Battle of France and on coast-defense duties on the Gironde Estuary for the rest of the war.