On 5 June 1918, the 25th Battalion was moving forward at Moriancourt, France when a shell exploded nearby, killing Archibald Dundas. It was later concluded he died of concussion from the explosion, with no visible wounds being found on his body.
Dundas was in France due to his own persistence, having been rejected three times for service due to his bad teeth before finally being accepted in August 1915. Dundas was assigned to the 25th Battalion, but his active service would be severely interrupted. In 1916 he received a fractured arm at the Battle of the Somme which led to 6 months recuperation in England. After returning to hostilities, Dundas then suffered scabies and frostbite to his left foot, leading to another stint in England in March 1917. He did not return to his Battalion until almost Christmas, six months before his death.
Before enlisting, Dundas played for the City Club in Toowoomba leading to his name being added to the Toowoomba British Football Association honour board in 1918.