The Department of History at York University in Toronto have posted a very useful set of videos to mark the centenary of the onset of World War One.
Utilizing still images and interviews with members of the university faculty, the seven short videos tackle many different aspects of the war: its origins, the role of women, Canada's homefront, weaponry, imperialism, French Canadians and the war, to mention just a few.
If you are interested in the ABCs of Canada and the war, give these films a look.
And if you want a broader perspective, the BBC has been building a fascinating collection of video and text about the war on its website.