World War I Service Records from 1919-1926 document the service history of Hawaii residents (and some non-Hawaii residents) who were in the armed forces during World War I. Records were compiled by the War and Navy Departments under the provisions of a Congressional Act approved on July 11, 1911 for the use of state and territorial authorities in the administration of various bonuses, veterans preference, and state compensation.

The information on the cards was obtained from enlistment records. The cards show names, serial number, race, residence, place and date of enlistment or induction, place of birth, age, former service records, rank and discharge date. Some records also list date of birth, promotions, principal stations, wounds or other injuries receive in action.