When you achieve the rank of Corporal and join the NCO ranks you also earn the right to wear the blood stripe on your dress blue trousers. As an act of initiation that some pussies might describe as “hazing” your fellow NCOs beat the ever loving shit out of your legs with their knees and ensure you won’t walk for the next day or two. If you don’t receive this treatment your unit is weak or your peers don’t respect you.
No, we aren’t going to be blood striping Sherman. He picked up Corporal by sucking Gunny’s dick and he’ll probably cry hazing, anyway.