The DGS Cemetery Database uses the following codes for the mil field.
| Code | Meaning |
| Any | Any |
| 1 | Mexican War |
| 2 | Civil War |
| 3 | Spanish American War |
| 4 | WW I & AEF action after WW I |
| 5 | WW II |
| 6 | Korea |
| 7 | Viet Nam |
| 8 | Afghanistan Iraq, Gulf |
| 9 | Military Service, war not specified |
