| 1. Letters worn on collar | 2. Public Health Service insignia | |
| Shoulder straps of dress and service coats | ||
| 3. Surgeon General | 4. Assistant Surgeon General | 5. Senior Surgeon and Surgeon |
| 6. Passed Assistant Surgeon | 7. Assistant Surgeon | 8. Professor, Hygienic Laboratory |
| 9. Quarantine Inspector | 10. Chaplain | 11. Interne |
The Overcoat for Officers is a single-breasted ulster of dark blue cloth extending to within twelve inches of the ground, closed down the front by a row of five large flat black buttons, with a standing and falling collar, and having the stripes indicating the rank the same as for the full dress coat except that they shall be of black mohair braid.
Insignia of Service and Rank.—The insignia of the Public Health Service consist of a foul anchor crossed by a caduceus. The distinctive device worn on the blue cap consists of a gold shield seven-eighths of an inch in height, emblazoned palewise with thirteen pieces with a chief strewn with thirteen stars, surmounted by a gold spread eagle five-eighths of an inch in height and one and five-eighths from tip to tip of wings, the whole being placed upon the service insignia in gold, the staff of the caduceus and the anchor each being one and seven-eighths inches long.
The insignia of rank for commissioned officers are as follows:
The Surgeon General.—One silver star of five rays, of such size that the points of the rays will fill a circle one inch in diameter, to be five-eighths of an inch from one point of the star to the next alternate point. One ray of the star to point toward the collar.
Assistant Surgeon General.—A silver spread eagle, 2¼ inches wide between the tips of wings; distance from tips of wings to center of talon on each side, 1¼ inches; from top of head to bottom of design, 1¼ inches. The insignia for the right side has in the right talon an olive branch and in the left a bundle of arrows. The extreme width from tip of arrowhead to olive branch is 1⁹/₁₆ inches. These insignia are made in pairs, rights and lefts, and the eagle faces to the front on each shoulder.
Senior Surgeon.—A seven-pointed silver oak leaf with stem; 1⅛ inches long from the tip of the stem to the tip of the leaf; 1¹/₁₆ inches wide at the widest point. The top of the leaf points toward the collar.
Surgeon.—A gold oak leaf of the same size and design, and worn in the same manner as for senior surgeon.
Passed Assistant Surgeon.—Two gold bars, each bar 1⅛ inches long and three-eighths inch wide; the bars being parallel, and three-eighths of an inch apart. The bars are worn with the long axis in a line from front to rear.
Assistant Surgeon.—One gold bar of the same size and worn in the same manner as for passed assistant surgeon.