The insignia is centered horizontally on the outer half of the sleeve with the chevron’s point up and its tip four inches below the shoulder seam. For short-sleeve khaki shirts, the chevron is centered between the shoulder seam and either the bottom of the sleeve (men) or the peak of the cuff (women).
Chevrons come in different sizes, depending on the rank of the marine, but are always placed on the collar with the points up. Position the chevrons. The bottom edge of the insignia (no matter what rank) will be 1⁄2 inch (1.3 cm) from the side of the collar on both sides.
Using either thread the color of the area you will be sewing or clear thread, use your sewing machine to sew the patches to the uniform. Sew just along the inside edge of the patches. Backstitch the beginning and end of the stitch to keep the thread in place.
Traditionally, Officers, Staff Noncommissioned Officers, and Noncommissioned Officers of the Marine Corps have worn this scarlet red stripe on their dress blue trousers to commemorate the courage and tenacious fighting of the men who fought in the Battle of Chapultepec in September of 1847.
Sergeant Major (SGTMAJ) 3 Stripes | Star | 4 Rockers. E-9. Sergeant Major Of The Marine Corps (SGTMAJMC)
Wear ribbons with the lower edge of the bottom row centered 1/4 inch above the left breast pocket and parallel to the deck. To prevent coat lapels from covering ribbons, ribbons may be aligned so the border to wearer’s left is aligned with left side of pocket.
The lower end of the first stripe is 2 inches from the end of the sleeve. On jumpers having a buttoned cuff the lower end of the first stripe is 1 1/2 inches above the upper edge of the cuff. The trailing edge of the stripe is in line with the trailing edge of the rating badge. The stripes are at a 45 degree angle.