Major-General George Mackintosh Lindsay, CB, CMG, CBE, DSO (3 July 1880 – 28 November 1956) was a British Army officer who played a prominent role in the development of mechanised forces during the 1920s and 1930s. Lindsay had spent much of the First World War developing doctrine for the use of machine-guns and training specialist units to operate them. After the war, commanding an armoured-car unit in Iraq, he became intrigued by the potential of mechanised warfare techniques. He was an influential figure in the debate around armoured forces during the 1920s and 1930s, working with J.F.C. Fuller on the Experimental Mechanized Force, and commanded the first experimental armoured division in 1934. Retiring just before the Second World War, Lindsay was called out of retirement to command the