1 September 1939
Nazi Germany invades Poland.

Credit: Bundesarchiv
2 September 1918
After a week of heavy fighting, Canadian troops break through the Drocourt-Quéant Line near Arras, France.
3 September 1943
The British 8th Army under Field Marshal Bernard L. Montgomery begins the Allied invasion of the Italian peninsula, crossing the Strait of Messina from Sicily and landing at Calabria.
4 September 1914
The Canadian military camp at Valcartier, north of Quebec City, swells with 32,000 men and 8,000 horses.

Credit: Musée McCord Museum/Wikimedia
5 September 1758
A force of 1,500 British troops in nine vessels arrives in Gaspé Bay to begin raiding Acadian villages on the coast of present-day New Brunswick and the Gaspé peninsula.

Credit: North Wind Picture Archives/Alamy/DY1N5C
8 September 2007
Under enemy fire, Capt. Joesph H.S. Tremblay of Courcelette, Que., leads Afghan soldiers in combat. He is awarded the Medal of Military Valour.
10 September 1813
The Americans gain control of the upper Great Lakes after defeating the British at the Battle of Lake Erie.
11 September 1942
U-517 torpedoes and sinks HMCS Charlottetown in the St. Lawrence River near Cap-Chat, Que. Six of its crew are lost that day, with four later dying of wounds sustained during the attack.
18 September 1998
Canadian search and rescue technicians MCpl. Bryan Pierce and Sgt. Keith Mitchell each receive the Cross of Valour for a Nov. 12, 1996, nighttime parachute jumps into freezing Arctic waters to save a critically ill fisherman.
19 September 1915
The Newfoundland Regiment lands at Suvla Bay in Gallipoli, Turkey.
22 September 1915
The Newfoundland Regiment’s first war fatality is Pte. Hugh McWhirter, in Gallipoli, Turkey.
23 September 2023
A granite monument memorializing the 158 members of the Canadian Armed Forces who died in Afghanistan is unveiled in Amherst, N.S.

Credit: The Royal Canadian Legion
25 September 1942
A Japanese aircraft is destroyed by RCAF Sqdn. Ldr. Kenneth A. Boomer over an Aleutian island near Alaska.

Credit: Canadian Virtual War Museum
28 September 1875
Heavy timbers on the track derail a train near Yamaska, Que., killing 10. Sabotage or vandalism is suspected.
29 September 1988
It’s announced that the Nobel Peace Prize is to be awarded to the United Nations peacekeeping forces.
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