Maurice Day was a pupil in Ashburnham House between 1906 and 1909. Upon leaving school hewas articled to an architect, and was just out of his articles when the war began. He enlisted in the 28th Battalion of the London Regiment (Artists’ Rifles) and went out to the Western Front in the autumn of 1914 to oversee the Officer Training Corps. The Artists Rifles was an extremely popular unit for volunteers. Due to the large number that joined it was formed into three sub-battalions in 1914, and recruitment was eventually restricted by recommendation from existing members of the battalion. He was promoted to the role of Lieutenant in the 2nd Battalion ofPrincess Charlotte of Wales’s (Royal Berkshire) Regiment in March 1915 moving to serve on the front line.
As with the two other Old Westminsters killed on 9th May, Day died in action at the Battle of Aubers Ridge, France.