Judy,
Your father's service records are available to you with proof of relationship and death. See this page for all the details:
http://www.archives.ca/02/020203/02020302_e.html
It's a time-consuming process, but well worthwhile. We can help you decrypt the acronyms and so on when you get them. These records will trace his service from the day he joined to the day he was demobbed.
I hope you go forward with this; these records are an integral part of your family's heritage, from a time most don't understand or prefer to ignore.
That's why
we're here....