The Westland Lysander was a British army co-operation and liaison aircraft produced by Westland Aircraft and used during the Second World War. The aircraft's exceptional short-field performance made possible clandestine missions using small, unprepared airstrips behind enemy lines that placed or recovered agents, particularly in occupied France. Like other British army air co-operation aircraft it was given the name of a mythical or legendary leader, in this case the Spartan general Lysander.
After the withdrawal from France, Flash was posted to an Operational Conversion Unit, training pilots to fly Lysanders for Army Cooperation Command. By the time he was sent back to Fighter Command, Flash had crashed three examples.