Ensignia will be worn single point up, centered on the outer half of each sleeve. Insignia will will be four inches below the shoulder seam (three inches for male First Sargeant/Master Sargeant and above). Service strip(s) will be placed on lower sleeve whereas the lower point of bottom stripe meets the point of piping.
The correct placement of rank for a non-commissioned officer's Army dress blues is centered on the left sleeve between the shoulder seam and the elbow. The shoulder sleeve insignia is centered on the left shoulder 1/2 inch below the top of the shoulder seam.
Roger Troutman - "Hurry Up"
No, Marines are not authorized to wear their dress blues coat with jeans. The dress blues uniform is typically worn with appropriate uniform trousers or a skirt.
Yes when appropriate for the duty-it's called modified dress blues
in 2012 they will
The 'crackerjack' uniform, in blues and whites, is the dress uniform for enlisted personnel below the rank of E-7. E-7 and above wear a different set of uniforms.
The US Army is presently going to dress blues.
Yes
that is what you wear to the ball...
A current Marine Corps ribbon chart can be found here: (See related Link)
I am guessing around 1900 http://members.tripod.com/~Fbg_mem_museum/uniftalk/unipat2.htm
Yes. They go in the center of the ribbon of the medal. If you rate a star, and it is the correct corresponding star/medal.