Civil Engineers Corps: two crossed silver sprigs, each of two live-oak leaves and an acorn, one and three-quarter inches long and one inch wide.
Chaplains: a Latin cross embroidered in silver.
Medical Reserve Corps: a gold acorn embroidered upon a silver spread oak leaf, one and three-quarters inches long and one inch wide.
Dental Corps: a gold spread oak leaf with a silver acorn on either side of the stem, one and three-quarter inches long and one inch wide.
The rank insignia, indicating the rank of the wearer, are practically the same as those for the Army and the Marine Corps, and are as follows:
- Admiral—four silver stars.
- Vice Admiral—three silver stars.
- Rank of Rear Admiral—two silver stars.
- Rank of Commodore—one silver star.
- Rank of Captain—a silver spread eagle.
- Rank of Commander—a silver oak leaf.
- Rank of Lieutenant Commander—a gold oak leaf.
- Rank of Lieutenant—two silver bars.
- Rank of Lieutenant Junior Grade—one silver bar.
- Rank of Ensign—no insignia.
- Midshipman—a gold anchor.
The insignia indicating the rank and corps of officers are worn on each side of the collar of the blue service coat as illustrated; for Line Officers they are as follows:
Admiral of the Navy—four silver stars, the two end stars being surcharged upon gold foul anchors.
Admiral—four silver stars, the star nearest the back being surcharged upon a gold foul anchor.
Vice Admiral—three silver stars with a silver foul anchor in rear of them.