Vickers Medium Dragon

The Vickers Medium Dragon was a fully tracked British field artillery tractor made by Vickers, later Vickers-Armstrongs, in several versions from 1922 to 1937. It towed a wide range of artillery from 18-pounder field guns up to the BL 60-pounder, and was developed from the load-carrying version of the Tropical Tank designed by Lieutenant-Colonel Philip Johnson, using running gear from the Vickers Medium Mark I tank. Vickers began a limited production run in 1923 with 18 Mark I tractors, and the Marks I to III were bought in quantity by the British Army as it began mechanising its artillery. The Mark IV of about 1932 was a complete redesign using the running gear of the Vickers 6-ton tank. The Army decided in 1935 to buy only wheeled tractors, but Vickers sold the Mark IV abroad until 1937, including 23 to China, 18 to India, 20 to Finland and 26 anti-aircraft versions to Siam.