Operation Bodenplatte (; "Baseplate"), launched on 1 January 1945, was an attempt by the Luftwaffe to cripple Allied air forces in the Low Countries during the Second World War. The goal of Bodenplatte was to gain air superiority during the stagnant stage of the Battle of the Bulge so that the German Army and Waffen-SS forces could resume their advance. The operation was planned for 16 December 1944, but was delayed repeatedly due to bad weather until New Year's Day, the first day that happened to be suitable. Secrecy for the operation was so tight that not all German ground and naval forces had been informed of the operation and some units suffered casualties from friendly fire. British signals intelligence recorded the movement and buildup of German air forces in the region, but did not realise that an operation was imminent. The operation achieved some surprise and tactical success, but was ultimately a failure. A great many Allied aircraft were destroyed on the ground but replaced within a week. Allied aircrew casualties were quite small, since the majority of Allied losses were grounded aircraft. The Germans, however, lost many pilots who could not be readily replaced. Post-battle analysis suggests only 11 of the Luftwaffe's 34 air combat Gruppen (groups) made attacks on time and with surprise. The operation failed to achieve air superiority, even temporarily, while the German ground forces continued to be exposed to Allied air attack. Bodenplatte was the last large-scale strategic offensive operation mounted by the Luftwaffe during the war. Background The armies of the Western Allies were supported by the Allied Air Forces as they advanced across Western Europe in 1944. The Royal Air Force (RAF) and its Second Tactical Air Force—under the command of Air Marshal Arthur Coningham—moved No. 2 Group RAF, No. 83 Group RAF, No. 84 Group RAF and No. 85 Group RAF to continental Europe in order to provide constant close air support. The RAF harassed the German air, sea and ground forces by hitting strong points and interdicting their supply lines while reconnaissance units apprised the Allies of German movements. With Allied air superiority, the German Army could not operate effectively. The Luftwaffe, equally, found it difficult to provide effective air cover for the German Army. Although German aircraft production peaked in 1944 the Luftwaffe was critically short of pilots and fuel, and lacked experienced combat leaders. The land battles moved