Glen,
To answer your question, the minimum education requirement for entry into the CF is completion of grade 10. You mentioned that you finished half of your grade 10 year and that later you got a bump up to do some grade 11 courses. Did you complete any of those courses? If so, I would suggest that you may just barely meet the education requirements, which is potentially good news.
Now to answer your other question. You cannot use your fake diploma to gain admission into the CF. Not even a real diploma will work. The Canadian Forces Recruiting Center requires your highschool TRANSCRIPTS. It is these transcripts that are used to verify your education. So your fake diploma is useless insofar as entry into the CF is concerned.
In order for the recruiting center to open your file they demand the following items from you.
-Highschool transcripts
-SIN Card (its not good enough to memorize your SIN number, they insist on making a photocopy of your SIN card)
-Birth certificate
-Drivers licence if you have one.
If you do not bring in ALL of the above items, the recruiting center will simply not process you.
Here is what I suggest. Contact your former highschool and request a copy of your transcripts. Gather up your SIN card, drivers licence and birth certificate and head into the recruiting center. Show them what you have and ask them if you qualify for entry. It is my beleif, based on what you have said (assuming that you have been truthful) that you will likely be deemed to have acheived the minimum education requirement for entry into the CF. If that is the case then your all set.
If they determine that you do not currently meet the minimum education requirements you can appeal that decision and use previous work experience to substantiate your appeal. You may even be able to write the CFAT test. If you write the test, and do well enough on the test, and you have half of grade 10 completed, I would think the recruiting center would be very hard pressed to turn you down.
However, if they do declare your education to be too low, even after an appeal, you then have the opportunity to ask them exactly what courses you need in order to rectify the situation. The solution is then simple. Take the courses and re-apply and the recruiting center will be extremely enthusiastic about processing your application.
So there you have it. If you take my advice, I beleive you will find yourself with a decent prospect of getting in. If you do not take this advice and you attempt to fool the recruiting center with your fake diploma, you will fail, and any chance at serving your country will vanish. Is that what you really want?
Now that I have gotten all of the advise out of the way. A few questions for you. The impression I am getting from you is that you have no interest in completing any highschool requirements PRIOR to joining the CF. Is my assumption correct? If so, why? I am sure you are sick of hearing this type of sermon, but you must understand that you will only hurt yourself in the long run if you do not take steps to complete your formal education. Even if you gain admission to the CF, what will you do if you happen to fail military training and get kicked out? What will you do if you injure yourself and are no longer suitable for employment with the CF? These are serious questions you need to consider when making decisions about your future.
One other point I would like to make... You seem to be trying to gain "our" approval for your fake diploma tactic, or in effect talk us into it. It is a useless venture. Even if you succeeded in convincing us that this is a good idea, you will still fail to gain entry into the CF. None of us have any say in the matter, the only thing we can do is give you our advice. I strongly recommend that you follow the advice given to you here.
The CF is in dire need of new, motivated recruits. Work with the system honestly and I beleive you will succeed.
Good luck with your application.