Marines say Ooo-rah not Hoorah. Otherwise your good. I personally like Ooo-rah, even though I wasn't a Marine. I seem to get along with Marines well though.....
I'm not a Marine... yet. So I didn't know.
I'd probably get us all in trouble and yelled at by the DIs, lol.
Semper Fi is the Marine Corp motto. I'm looking for motivational war cry stuff like Oorah!