 Other Canadians were spread across RAF squadrons, and on the second day of the Battle, 11 July, Canada suffered its first fighter casualty.In a "Luftwaffe" attack on the Royal Navy Dockyard naval base at Portland Harbour, Plt Offr D. A. Hewitt of Saint John, New Brunswick, flying a Hurricane with No.501 Squadron RAF, attacked a Dornier Do 17 bomber and was hit himself.