The ship conducted five non-intervention patrols during the Spanish Civil War in 1936–1938, and participated in the Coronation Review of King George VI in May 1937. Admiral Graf Spee was deployed to the South Atlantic in the weeks before the outbreak of World War II, to be positioned in merchant sea lanes once war was declared. Between September and December 1939, the warship sank nine vessels totaling 50,089 gross register tons (GRT), before being confronted by three British cruisers at the Battle of the River Plate on 13 December.