First, we send a joint Army-Navy overseas force to capture the port city of Halifax, cutting the Canadians off from their British allies. Then we seize Canadian power plants near Niagara Falls, so they freeze in the dark. Then the U.S. Army invades on three fronts -- marching from Vermont to take Montreal and Quebec, charging out of North Dakota to grab the railroad center at Winnipeg, and storming out of the Midwest to capture the strategic nickel mines of Ontario. Meanwhile, the U.S. Navy seizes the Great Lakes and blockades Canada's Atlantic and Pacific ports.

As it turns out, Katz isn't the first Canadian to speculate on how to fight the U.S.A. In fact, Canadian military strategists developed a plan to invade the United States in 1921 -- nine years before their American counterparts created War Plan Red.

"His plan was to start sending people south quickly because surprise would be more important than preparation," said Floyd Rudmin, a Canadian psychology professor and author of "Bordering on Aggression: Evidence of U.S. Military Preparations Against Canada," a 1993 book about both nations' war plans. "At a certain point, he figured they'd be stopped and then retreat, blowing up bridges and tearing up railroad tracks to slow the Americans down."