Ralston Field is named in honor of Colonel Robert R Ralston, the commanding officer of the 3rd Engineers at the time of his death in 1934. The Engineer castle was added in 1935 and is modeled after the old West Point library. The 3rd Engineers were then billeted in "B" Quad.
| 1. Div. Headquarters | 2. Richardson Pool | 3. Golf Course |
| 4. Horse Stables | 5. Kolekole Pass | 6. Post Cemetery |
| 7. Stockade | 8. Ralston Field | 9. Post Office |
| 10. Pineapple Limited | 11. Boxing Bowl | 12. Post Theater |
| 13. Chapel | 14. Soldiers Barracks | 15. Post Exchange |
| 16. Museum | 17. Officers Quarters | 18. Post Gates |
| 19. Kemoo Farms | 20. Officers Club | 21. Hospital |
