Tour Scotland video of Field Marshall tractors on visit to the Vintage Agricultural Machinery Club Rally at Corston Mill, Strathmiglo, Fife. The Field-Marshalls were a range of British farm tractors manufactured by Marshall, Sons and Co. of Gainsborough, Lincolnshire. Field-Marshalls were in production from 1945 to 1957. However, the first single-cylinder Marshall came into production in 1930.