Usually towards the bottom near the opening where the hand comes out
The rank of sergeant is denoted by three chevrons on the sleeve of the DPCU uniform (old style) or in the rank-slot on the front of the new design uniform.
Sgt. Snorkel has five stripes making him a SFC (Sergeant First Class)
Centered on the sleeve, four inches below the shoulder seam. Marine Corps Order P1020.34F, the Marine Corps uniform regulation, is available at http://www.tecom.usmc.mil/mcub/library/MCUR/URTOC.htm.
Go here: http://www.marcorsyscom.usmc.mil/sites/mcub/PAGES/Uniform%20Regs%20Chapters/Uniform%20Regs%20Index.asp
4 years equals one chevron stripe worn at the bottom of the sleeve near the wrist.
The chevron is to be placed 4 inches below the shoulder seam and centered.
The 6-month overseas stripe is worn on the US uniform on the lower LEFT sleeve, just above the cuff. During WW1, this was where the Wound Chevron was worn. So some soldiers who saw service in WW1 and WW2 may wear both on the same sleeve at one point in time.
The uniform of a Sergeant Major in the British Army typically consists of a dark blue or green tunic with distinctive insignia, including rank badges on the sleeve and often a lanyard on the shoulder. They wear trousers that match the tunic, and their uniform may include a peaked cap or beret, depending on the regiment. The Sergeant Major's uniform is completed with polished boots and specific decorations or medals that reflect their service and achievements. Overall, the attire is designed to convey authority and professionalism within the military hierarchy.
on the sleeve like every other uniform
A part that will always be on your uniform is your troop/unit number on your right sleeve.
4 inches below the shoulder seam and centered.
It was a long sleeve blue shirt with buttons and a collar