| 1914 | |
| June 28 | Archduke Franz Ferdinand and his wife assassinated in Sarajevo |
| July 23 | Komagata Maru escorted out of Vancouver Harbour by HMCS Rainbow |
| Aug. 4 | Great Britain declares war on Germany after its invasion of neutral Belgium. As a former colony and now self-governing dominion, Canada automatically involved |
| Aug. 4 | Agents for Premier Richard McBride inspect and purchase Seattle-built submarines for over one million dollars |
| Aug. 5 | Canada commits to send infantry division of twenty-five thousand men |
| August | Troops entrain for basic training at Valcartier, Quebec |
| Sept. 18 | Vernon Internment Camp opens for Germans, Austro-Hungarians and Ukrainians |
| October | First contingent arrives in Britain/Salisbury Plain |
| Oct. – Nov. | The first Battle of Ypres, Belgium. Trench warfare begins on the Western Front |
| Nov. 1914 | Colonel Henry Seymour Tobin organizes and commands the 29th (Vancouver) Battalion, known as “Tobin’s Tigers.” One of their members, Bob Hanna, earns the Victoria Cross for exceptional bravery |
| Dec. 25 | The Christmas Truce—British, German and French troops celebrate together |
| 1915 | |
| 1915 | Aboriginal Canadians enlist—four thousand serve (one in three able-bodied Native men) |
| February | Canadians are deemed ready to proceed to France |
| March 26 | Cyclone Taylor leads the Vancouver Millionaires to the Stanley Cup at the Denman Arena |
| April | British Pacifi c Construction and Engineering, a Seattle company, builds submarines for the Russians at secret plants in Burnaby and Vancouver to avoid violating American neutrality |
| April 22 | Ypres gas attack |
| April 24 | Edward Bellew of Kamloops sees action at Ypres, later earns VC |
| July | Ukrainian Canadian Filip Konowal enlists, later earns VC |
| Dec 8 | “In Flanders Fields” appears anonymously in Punch |
| Dec 15 | BC premier McBride resigns and moves to London |
| 1916 | |
| Jan. 21 | Victoria’s John Sinton earns VC in Mesopotamia |
| March | Battle of St. Eloi |
| June 16 | Battle of Mount Sorrel |
| July 1 | The Somme—Newfoundland Regiment slaughtered |
| Sept. 1 | Japanese Canadian Masumi Mitsui travels to Calgary to enlist after being turned away by BC regiments |
| Sept. 14 | Provincial election—Conservatives defeated, Liberals elected |
| Sept. 15 | Canadians attack at Courcelette |
| Sept. 15 – 16 | Nursing Sisters Elsie Collis and Ethel Morrison join Canadian Army Medical Corp |
| Sept. – Oct. | Battle of Regina Trench |
| Oct. 9 | Chilliwack Piper James Richardson (VC) killed in action |
| 1917 | |
| April 6 | United States joins the war effort |
| April 9 – 12 | Battle of Vimy Ridge—a defining moment for the Canadian Corps |
| April | George McLean, BC Native soldier, awarded DCM for bravery at Vimy |
| August | Billy Bishop receives VC |
| Aug. 6 | Premier Richard McBride dies in London, England, of Bright’s disease |
| Aug. 15 – 17 | Vancouver’s Michael O’Rourke earns VC at Hill 70 |
| Aug. 21 | Abbotsford’s Robert Hanna earns VC at Battle of Hill 70 |
| Aug. 29 | Conscription introduced by the Military Service Act |
| Oct. – Nov. | Battle of Passchendaele |
| Nov. | Strange fl u symptoms reported in China, later identified as “Spanish flu” |
| Dec. 6 | Halifax explosion |
| Dec. 17 | Nursing sisters and women with relatives in the military vote in the federal election |
| 1918 | |
| Jan. 24 | First woman to run (and be elected)—Mary Ellen Smith—in a Vancouver byelection. First time women vote in a BC provincial election |
| Feb. 20 | Wee Tan Louie of Kamloops rides a horse across the Rockies to enlist in Calgary |
| March 31 | Walhachin VC recipient Gordon Flowerdew dies of wounds received in the last great cavalry charge of the war |
| April 21 | Red Baron shot down |
| May 9 – 10 | Victoria’s Rowland Bourke earns VC for action in Royal Navy Reserve |
| Aug. 8 – 18 | Battle of Amiens (Last Hundred Days campaign) |
| Sept. 27 – Oct. 11 | Canal du Nord and Cambrai |
| Sept. 29 – Oct. 3 | Powell River’s John MacGregor earns VC at Cambrai |
| Nov. 11 | Armistice |