SOG question

Few questions: (Coming from Plaster's book)

I noticed a few of the guys were PFC's and SP4/5's. Were all members of SOG grads of the SF course? (I assume support guys were not)

Which relates to my next question of was the SF course much the same as it is now? Length and such or was during the war a shortened version added to get guys in the field?

When did 30 rnd mags come on line?

What was the length of tour?

Dick Meadows son was my PL, I see sr. was mentioned several times in the SOG book, but never any stories about him other than the Son-Tay raid. Any reason why he didn't get much written about him since he had a great rep?

I am truly amazed at some of the stuff those guys did (You included Mark), going into such zones seemed to be a death trap but you guys made it out..

Hoped some of the indigs made it out. Any more info on the overland route used by them?