Operation Bulbasket was an operation by 'B' Squadron, 1st Special Air Service (SAS), behind the German lines in German occupied France, between June and August 1944. The operation was located to the east of Poitiers in the Vienne department of south west France; its objective was to block the Paris to Bordeaux railway line near Poitiers and to hamper German reinforcements heading towards the Normandy beachheads, especially the 2nd SS Panzer Division – Das Reich.

The Special Air Service (SAS) is a special forces unit of the British Army. It was founded as a regiment in 1941 by David Stirling, and in 1950 it was reconstituted as a corps. The unit specialises in a number of roles including counter-terrorism, hostage rescue, direct action and special reconnaissance. Much of the information about the SAS is highly classified, and the unit is not commented on by either the British government or the Ministry of Defence due to the secrecy and sensitivity of its operations.