Against this background, the Admiralty issued a specification for a purpose-built, two-seat patrol and reconnaissance aircraft.

Shortly after its formation in 1948, the United States Air Force issued a specification calling for a new type of high-speed target drone.

In 1944 the British General Staff issued a specification for a new submachine gun.

In March that year the RAAF issued a specification for a small transport glider.

In 1938 the British War Office issued a specification for a scouting vehicle.

The French Navy issued a specification for a new long-range flying boat to replace the obsolete 521 Bizerte in May 1935.

The United States Navy issued a specification for a scout-bomber in 1934 and the competition was won by Brewster.

The army issued a specification to various manufacturers, and both Mauser and Walther submitted prototypes that were very similar.

In May 1935, the French Navy issued a specification for a long-range flying boat to replace the obsolete Breguet 521.

The Air Ministry therefore issued a specification in 1936 covering the dimensions and requirements for a light transportable shed for use in war.