Stewart and another British spy, Captain Trench, were pardoned and released by the German Kaiser as a present to Ernest Augustus the Duke of Brunswick when Augustus married the Kaiser's daughter, Princess Victoria Louise of Prussia.

[1] Stewart and another British spy, Captain Trench, were pardoned and released by the German Emperor Wilhelm II as a present to Ernest Augustus the Duke of Brunswick when Augustus married the Kaiser's daughter, Princess Victoria Louise of Prussia.

[5] When the Great War started, he was quickly given a position in the Intelligence Department on the Staff of Major General Allenby.

During the Battle of the Marne, in the opening months of the war, his unit was facing fierce German attacks when he grabbed a rifle and went to help the men at the front lines.

He was found dead by a future author and member of the same unit, Frederick Coleman, near the River Vesle.