sentences:  The purpose was to investigate the future possible use of tailless and tail-first concepts.In 1944, contract Acft/3303/CB.10(c) was issued to GAL for the construction and development of four unpowered proof-of-concept aircraft, three later designated as GAL.56, plus one GAL.61.The three GAL.56 variants employed the same fuselage design, married to three different wing designs.