The Sopwith F.1 Camel is one of five surviving aircraft of this type, but the slip bomb device under its fuselage is the only one surviving in the world. The Sopwith Camel is the most famous British fighter of the Great War period. The Sopwith F.1 Camel was a single-seat biplane with entirely wooden structure, powered by a rotary engine. It entered service in 1917. A total of 5490 units were built. Despite its indisputable advantages, the Camel was an extremely difficult machine to fly; the gyroscopic effect caused by the rotary engine was a frustration for novice pilots. The only Camel serving in Poland's air force (no. F5234) was brought to Poland by the American volunteer, lieutenant pilot Kenneth M. Murray, as his private property. The exhibit in the Polish Aviation Museum's collection (no. B7280) initially served in the Royal Naval Air Service and then in the Royal Flying Corps. Two British pilots who flew it shot down a total of 11 aircraft. This aircraft is also the historical First World War-era aviation example most distinguished in battle.