The best place to start if you're interested in Canadian military history is a book titled Vimy by Pierre Berton. The book is some 300 pages and extraordinarily well written. (It is also an excellent account of the Canadian artillery fire system which was revolutionary and the most sophisticated in the world at the time. If you are interested in the history of artillery, it's a must read.)

It's the story of the Canadian attack on the German high ground positions Vimy Ridge (part of the Third Ypres battles). The French and the British thought the German defences at Vimy impenetrable. We didn't.

A few lines from the book:

Two minutes. Now came the whispered order to fix bayonets. The sound of the loose locking rings, rippling all along the miles of trenches, was like the humming of a thousand quivering bees.

Silence. Thirty thousand men held their breath, tensing their cramped muscles for the moment that some had been awaiting since November.

One more minute ticked by, and then a single gun fired. One second elapsed and the world exploded as the greatest artillery barrage in the history of warfare burst upon the unsuspecting Germans and the battle of Vimy Ridge began.