Let's review the facts CanadaBob2. If you read the article you linked to you will note that while Pierre Trudeau reduced military spending shortly after coming to power you will appreciate that spending was at an absurdly high 16%+ of the budget. Liberal and Conservative afterwards maintained it at about 6-7% of the budget.

However as a % of GDP the real downswing in spending occurred during the Mulroney, Chretien, Martin, Harper years (with an uptick during the first few years of the Afghan war under Chretien). http://data.worldbank.org/indicator/MS.MIL.XPND.GD.ZS?locations=CA

The downswing in military spending coincides with much of the free world taking a "peace dividend" as the Cold War ended.

I think the facts support my observation that both Liberal and Conservative governments have been remarkably consistent in military spending and deployments.