Oil campaign of World War II

Oil campaign
	Part of the strategic bombing during World War II
	; The Sandman, a B-24 Liberator, emerges from smoke over the Astra Română refinery, Ploiești, during Operation Tidal Wave (1 August 1943)
Date	15 May 1940 – 26 April 1945
Location	European theatre of World War II
Result	Allied victory
Belligerents
United States; United Kingdom;	Germany; Romania (until 1944); Kingdom of Hungary
Commanders and leaders
Richard Peirse (1940 – 1941 (Dec)); Carl Spaatz (1942 (May) – 1945); Arthur Harris (1942 (Feb) – 1945);	Carl Krauch; Ion Antonescu; Paul Pleiger
Strength
8th Air Force; 15th Air Force; RAF Bomber Command	See Defence of the Reich
Casualties and losses
	US: 5,400 aircraft lost

The Allied oil campaign of World War II^: 11 was an aerial bombing campaign conducted by the RAF and the USAAF against facilities supplying Nazi Germany with petroleum, oil, and lubrication (POL) products. It formed part of the immense Allied strategic bombing effort during the war. The targets in Germany and in Axis-controlled Europe included refineries, synthetic-fuel factories, storage depots and other POL-infrastructure.

Before the war, Britain had identified Germany's reliance on oil and oil products for its war machine, and the strategic bombing started with RAF attacks on Germany in 1940. After the US entered the war (December 1941), it carried out daytime "precision bombing" attacks – such as Operation Tidal Wave against refineries in Romania in 1943. The last major strategic raid of the European theater of the war targeted a refinery in Norway in April 1945.

During the war the effort expended against POL targets varied, with relative priority moving between the other objectives within the Allied Combined Bomber Offensive such as to defeating the German V-weapon attacks, the destruction of the German air force, or to attacking transport links in preparation for the invasion of western Europe in 1944.