Japanese Navy. Officers’ sleeve decorations indicating rank
| 1. Admiral | 2. Vice Admiral | 3. Rear Admiral |
| 4. Captain | 5. Commander | 6. Lt. Commander |
| 7. Lieutenant | 8. Sub Lt., 1st Class | 9. Sub Lt., 2nd Class |
| 10. Midshipman | 11. Warrant Officer, Line | 12. Warrant Officer, Engineers |
Japanese Navy. Officers’ shoulder straps showing rank,
summer service uniform
| 1. Admiral | 2. Vice Admiral |
| 3. Rear Admiral | 4. Captain |
| 5. Commander | 6. Lt. Commander |
| 7. Lieutenant | 8. Sub Lt., 1st Class |
| 9. Sub Lt., 2nd Class | 10. Chief Warrant Officer |
| 11. Warrant Officer | 12. Midshipman |
The rank or rating of enlisted men who are petty officers or who are assigned to special duties is shown by distinctive marks worn on the left sleeve of the coat or overshirt; the principal ones being:—
| Seaman | An anchor. |
| Writers | A writing brush. |
| Hospital Corps | A pair of forceps. |
| Firemen | A double pipe spanner. |
| Carpenter’s Mate | An axe. |
| Stewards | A key. |
| Musicians | A lyre. |