You are already WELL past the point of 'experimental' use. "twice a week for half a summer" is much more than TWICE period. You are PDQ.
Here is the quandary you are in: tell the truth, and you are DQ. Forget (lie) and say nothing to indicate otherwise on the forms and you'll probably get in. But then you run the risk of being found out later, and the world crashes down around you.
If your job would require a TS, they are going to do an EXTENSIVE background check. What if they discover a friend that says "man, I am surprised he got in, he was such a doper!"? Then what?
My advice.... you have never smoked pot in your life. Leave it at that and drive on Marine!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.