were mostly used as trainers. Legacy The Vickers company persisted with an active experimental program during the First World War period, including a line of single-seat pusher fighters that culminated in the Vickers F.B.26 Vampire of 1917–18, but the F.B.5 remained their only significant production aircraft until the Vickers Vimy bomber, which entered service too late to affect the war. Despite its moderate effectiveness, the Vickers F.B.5 did have a lasting legacy as German pilots continued to refer to British pusher aircraft as "Vickers-types". Many victories over D.H.2 or F.E.2b pushers were reported as destruction of a "Vickers". A flying replica of the F.B.5 Gunbus was completed in 1966 and flew until late 1968. It is now (2014) an exhibit at the Royal Air Force Museum at Hendon near London. Variants E.F.B.2 (Vickers Type 18) Single-engined two-seat fighter prototype powered by 100 hp (75 kW) Gnome Monosoupape rotary engine. It had a slight overhang on upper wings and wing warping controls. Its nacelle was fitted with large celluloid windows and was armed with a single Vickers machine gun. One built. E.F.B.3 (Vickers Type 18B) Revised fighter, with equal-span wings, aileron controls and revised nacelle without windows. One built. E.F.B.4 Proposed design of similar layout to "Destroyer" - unbuilt. E.F.B.5 Further improved development of E.F.B.3. Six built for RFC and RNAS. F.B.5 Production version of E.F.B.5 with rectangular tail surfaces. At least 120 built by Vickers, with 75 built by Darracq in France and 12 by the Tøjhusvoerkstedt (Danish Arsenal Workshops), giving a total of at least 207. F.B.6 Pre-production aircraft, differing from E.F.B.5 by having revised unequal span wings with large overhang and ailerons only on upper wing. One built. F.B.9 Improved derivative of F.B.5, with revised wings and tail, more streamlined nacelle, a new V-type undercarriage and using streamlined Rafwire bracing instead of conventional cable bracing. 95 built by Vickers and 24 by Darracq, giving 119 in total. F.B.10 Proposed development with 100 hp (75 kW) Isotta Fraschini engine. Unbuilt. S.B.1 1914 design for dual control trainer based on E.F.B.3 and powered by 100 hp (75 kW) Anzani radial engine. Unbuilt. Operators Royal Danish Air Force Royal Flying Corps No. 2 Squadron RFC No. 5 Squadron RFC No. 7 Squadron RFC No. 11 Squadron RFC No. 16 Squadron RFC No. 18 Squadron RFC No. 24 Squadron RFC No. 25 Squadron RFC No. 32 Squadron RFC No. 35 Squadron RFC