Another contemporary battle scene by Stewart was The Charge of the Gordon Highlanders at Dargai painted in 1898 and exhibited at the Fine Art Society.

For his painting of Rally the Greys for instance, he interviewed veterans of the battle then living in Edinburgh, one of whom lent the artist a rare shell jacket worn during the charge.

Stewart served on the staff of the Illustrated London News for a number of years and in this capacity, went to South Africa as a "special" artist during the Boer War.

He also accompanied King Edward VII on his Mediterranean tours During the First World War, He served as a captain in the Royal Engineers and for some time was attached to the Australian and American forces.

He worked at Kenley, Surrey until around 1925 before moving to Rose Cottage in St John's Town of Dalry near Castle Douglas, Kirkcudbrightshire, where he died on 29 January 1951, aged 85 leaving his wife and three children.