Field Marshal William Joseph Slim, 1st Viscount Slim,, usually known as Bill Slim, was a British military commander and the 13th Governor-General of Australia.

The British Fourteenth Army was a multi-national force comprising units from Commonwealth countries during the Second World War. As well as British Army units, many of its units were from the Indian Army and there were also significant contributions from the British Army's West and East African divisions. It was often referred to as the "Forgotten Army" because its operations in the Burma campaign were overlooked by the contemporary press, and remained more obscure than those of the corresponding formations in Europe for long after the war. For most of the Army's existence, it was commanded by Lieutenant-General William Slim.