| Term / Abbreviation | Name |
|---|---|
| HA | Heavy Artillery |
| HAR | Heavy Artillery Reserve |
| HBMGC | Heavy Branch Machine Gun Corps (later Tank Corps) |
| HDM | Hull Daily Mail |
| HE | High Explosive |
| HMS | Her Majestys Ship |
| HMT | Her Majestys Trawler |
| HPD | Home Postal Depot |
| HS | Home Service |
| HSC | Hospital Ship Case (medical) |
| HT | Horse Transport |
| HV | High Velocity |
| Term / Abbreviation | Name |