Officers of the Leinster Regiment (Royal Canadians) at a Lewis gun class, Silesia, 1921

Photograph, Germany, 1921.

The Lewis Gun, with its distinctive barrel cooling shroud and top-mounted drum magazine, was the British Army's most widely used machine gun during World War One and in the years immediately after. All of the members of an infantry platoon would be trained in the use of the Lewis Gun so that they could take over if the usual gunners were killed or wounded.

From an album of 58 photographs associated with the Prince of Wales's Leinster Regiment (Royal Canadians).