Major, U. S. Marine Corps

Musicians, called "Musics", wore bright jackets.
They were non-combatants but often doubled as stretcher-bearers.

Officer's Dress Shoes
Shoes could be worn on either foot.
Not until 1851 was military footgear made to the shapes of the right and left feet.

Topographical Corps, U. S. Army
Full Dress
The ostrich plume and heavy embroidery on sword belt, cuffs and collar mark this man as an officer. The elite Topographical Engineers corps included John C. Fremont, George G. Meade, and Joseph E. Johnston.