In 1943–44 Prussia briefly partnered with longtime local rival Eberswalde SV 1912 (originally FC Britannia) as a combined wartime side or Kriegspielgemainschaft.
From 1943 to 1944, Prussia and its longtime rival, Eberswalde SV 1912 (formerly FC Britannia), formed an alliance for the duration of World War II as a combined wartime side or Kriegspielgemeinschaft.