What will infantry school be like as a prior service SGT from the marines that already has a combat deployment under their belt goin army ?

Everyone talking trash here needs check fire.
Marines Don’t go to Basic Training.
Ever.
Army Soldiers are required to attend Marine Corps Bootcamp regardless of rank. Fact. That SGT DRILL INSTRUCTOR will treat you like the private you will be, because… militarily speaking…. You ain't there yet.

A fucked SNCO who believes that, is exactly that. A fucked up Soldier. Remember i said SOLDIER, not Leader!
Leaders understand how to use their tools instead of proclaiming checking EGO at the door. Perhaps you should check yours.

Keep your head down and your mouth shut. Just like everyone else.

I'm a former Marine for 6yrs, Semper Fi and then changed to Army were I retired from. If your able to transition straight to Army you'll be a lucky one. Even though I ETS'd the Marines held my paperwork for 90 days before I could enlist in the Army. That caused me to lose one rank. The good thing was no basic training and went straight to school. Even though it was a different career field I breezed through it with all my military experience. The training Sargents treated me different as they did all retreads. Better I believe since the rest were just out of boot. I found no change in the time I had to spend in actual school. I think because of my maturity and skills I came out high in my class and got a better assignment. Despite my reduction in rank I was promoted quickly because of time in service and previous awards. I guess being in Vietnam helped. Good luck on your future endeavors. Remember once a Marine always a Marine.

Been there don that. Just not on the infantry side.

As soon as every army soldier/NCO around you knows you are prior service Marine, they'll have a lot of questions. Some won't want to approach you if they don't have to.

No matter what happens, remember as a former Marine, (is there such a thing?) you are twice the soldier of anyone else in your infantry school. At least that is what my Marine friends tell me. I'm smiling as I type this, don't hate on me too bad.
Semper Fi

I have some advice you will be prouder being a Marine than having been in the Army .In Fl. We can get Service tags for our autos ,you will see 20 Marine tags to 1 Army . More pride in being a Marine through out life.Stay a Marine !

It depends on how much time you have out or break in service. When I transferred from the Marines to the Army, I had 3 months break in service and did not have to attend Infantry School and yes, I was a SGT (0311).

You will become a some type of platoon leader position. you will out rank most of the other recruits . Then they will pick you to help them lead and train the New troops. You will get respect because of your prior service, and a Few extra Benny's for that prior Service TOO! Remember they are Raw troops. Good luck and Shine them Boots Troop!

The Army is just like the Marines for people new to it. Keep your mouth shut and do as you're told. That's the advice I gave to my own son when he enlisted in the Army.

Sorry to say When you first get to the army you are just some dude . But when you get to your unit that is where you put your input . As I was Army. and then national Guard.In the Guards as a Scout / 19D I had a lot of Marines That came threw .All I can say is when your new don't try to change The hole unit wait till you get put int a leadership roll Team leader Squad leader . But if you come into the army with I am better than you army people will have made the wrong choice in joining a new team Give it time and then you can make your new team better .