Former Marine here. You usually have to go in to boot with a 0300 (infantry) route. Than you have to have nothing bad on your record. No PI, drug involvement, etc when you were a civilian. Then you have to pass a top secret clearance. You also have to be in a certain slotted height range so you all look uniform in formation. So you con be selected to be a Marine Security Guard
After infantry school if you still have been a good boy and still want to be a Marine Security Guard you go to that school as well. The prettiest Marines get selected for that post for junior enlisted men.
Now if you done a 4 year enlistment, you can apply to be a Marine Security Guard if you are a NCO and have been a good boy and still look pretty. Pretty much the same process but you are applying as a NCO so qualifications are a little harder
Now if you were selected out of boot camp to be MSG and did your 3 years. You than go to the Marine infantry fleet and realize Marine Grunts are degenerate drunks that are anything but pretty. You are dealing with Marines who have done multiple deployments and hate life. The fleet Marines smell you and it makes them vomit. Than you realize you were never infantry and have a lot of knowledge to catch up on. You will be ridiculed, embarrassed, and hazed, until your pretty face and posture go away and you become just as angary and hatful as everyone else.
Former Marine here. You usually have to go in to boot with a 0300 (infantry) route. Than you have to have nothing bad on your record. No PI, drug involvement, etc when you were a civilian. Then you have to pass a top secret clearance. You also have to be in a certain slotted height range so you all look uniform in formation. So you con be selected to be a Marine Security Guard
After infantry school if you still have been a good boy and still want to be a Marine Security Guard you go to that school as well. The prettiest Marines get selected for that post for junior enlisted men.
Now if you done a 4 year enlistment, you can apply to be a Marine Security Guard if you are a NCO and have been a good boy and still look pretty. Pretty much the same process but you are applying as a NCO so qualifications are a little harder
Now if you were selected out of boot camp to be MSG and did your 3 years. You than go to the Marine infantry fleet and realize Marine Grunts are degenerate drunks that are anything but pretty. You are dealing with Marines who have done multiple deployments and hate life. The fleet Marines smell you and it makes them vomit. Than you realize you were never infantry and have a lot of knowledge to catch up on. You will be ridiculed, embarrassed, and hazed, until your pretty face and posture go away and you become just as angary and hatful as everyone else.