Leaving for the Marines, uh? I went through that, I got sick, went to MRP then I Was ELS'd because they didnt want me. Try getting told by "your Country" that you arent needed. Not to mention I was a Squad Leader as well. I made my name known by bossing others around, then I was told I wasnt needed. The pay sucks dick, they treat you like shit, even in the Fleet, if you arent a Sgt. you arent shit in the Marines.
Just remember, you need to know your Marine and Navy rank structure, chain of command. NEVER say I, me or my. Always sound the fuck off as loud as you can. Remember if your voice isn't gone by the end of your first week in training, you arent trying hard enough. Your first three days on Base you are in recieving, thats where youg et all your shit, Go Fasters, Cammies, Desert and Woodland's, Skivvies, everything. The the First Friday, is known as Black Friday, it's basically a time for your DI's to scare the shit out of you, and it works. You will be given 1 hour to write your faimly along with shit, shower and shave. Just in time for "Hygiene Inspection".
Marine Rank Structure (Enlisted, hints the E before the #)
E1 Private
E2 Private First Class
E3 Lance Corporal
E4 Corporal
E5 Sergeant (SGT)
E6 Staff Sergeant (SSGT)
E7 Gunnery Sergeant
E8 Master Gunnery Sergeant
Marine Rank Structure (Officer)
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
Navy Rank Structure
E1 Seaman Recruit
E2 Seaman Apprentice
E3 Seaman
E4 Cheif Petty Officer 3rd Class
E5 " " " 2nd Class
E6 " " " 1st Class
E7
E8
E9
E9
Thats All I can remember at this time.
Good Luck, SEMPER FI, DO OR DIE.