When but one stripe is worn, that is for officers of the rank of ensign, the colored cloth is made to show one-quarter of an inch on each side of the stripe.
For Staff Officers of the Naval Militia the colored corps stripes are broken for a distance of one and one-quarter inches at the center of the front of the sleeve.
The rank and corps of officers is shown on the blue service coat in two ways: first, by the stripes on the sleeves as above described; second, by rank and corps insignia worn on each side of the standing collar, to the right and left of the front opening at the neck.
These collar insignia are as illustrated, and consist of the insignia of rank in combination with the device indicating the corps of the wearer.
The Corps device or insignia, indicating to what corps or branch of the service the officer belongs, are:
Line Officers: a silver foul anchor, one and five-eighths inches long over all, one inch wide from tip to tip.
Medical Corps Officers: a silver acorn embroidered upon a gold spread oak leaf, stem to tip one and three-quarters inches, width one inch.
Pay Corps Officers: a silver oak sprig of three leaves and three acorns, one and three-quarters inches long by one inch wide.
Professors of Mathematics: a silver oak leaf and an acorn, one and three-quarters inches long and one inch wide.
Naval Constructors Corps: a gold sprig of two live-oak leaves and an acorn, one and five-eighths inches long and one and three-eighths inches wide.