Generally they have three stripes, though in some forces this may vary or be a compound rank and have more, or less with additional markings.
Sergeant Stripes - 2003 is rated/received certificates of: UK:U
The cast of Sergeant Stripes - 2003 includes: Jimmy Hibbert
Sgt. Snorkel has five stripes making him a SFC (Sergeant First Class)
Sergeant
There is no US Army Sergeant Major badge. There is a rank insignia, but it is not an awarded badge. There are three different insignia for the rank of Sergeant Major (E-9). Sergeant Major - Three stripes on top and three stripes on bottom with one star in the middle. Command Sergeant Major - Three stripes on top and three stripes on bottom with one star and wreath and in the middle. Sergeant Major of the Army - Three stripes on top and three stripes on bottom with two stars and eagle in the middle. See related links for pictures of US Enlisted rank insignia.
A diamond.
A sargeant has three stripes (also called chevrons) to show his rank. They are sown onto his brassard (a fabric strip worn on the right arm)
there are two different things and E8 can be in the marine corp. One is a master seargent. It is indicated by 3 stripes up, 3 stripes down ( rockers ) and cross rifles in the middle. Or a first seargent which is indicated by 3 stripes up, 3 stripes down and a diamond in the middle
That is the rank of Sergeant.
A Staff Seargeant is a rank in the US Army that was identified by 4 stripes worn on each arm. Three stripes pointed up and a curved stripe under them. This was one rank above the rank of Sergeant (3 stripes).
A soldier that wears two stripes is a 'sergeant'.
The stripes on a soldier's sleeve, shows their rank: one stripe is Lance Corporal, two stripes is Corporal, three stripes is Sergeant, and so on.