| 5307th Composite Unit (provisional) | |
|---|---|
 Shoulder sleeve insignia (SSI) of the 5307th Composite Unit | |
| Active | 1943–1944 |
| Country |  United States |
| Branch |  United States Army |
| Type | Special operations force |
| Role | Direct action Long-range penetration Jungle warfare Raiding Reconnaissance Special operations |
| Size | Regimental |
| Nickname(s) | Merrill's Marauders |
| Engagements | World War II *Burma Campaign |
| Commanders | |
| Notable commanders | Frank Merrill Charles N. Hunter |
Merrill’s Marauders (named after Frank Merrill) or Unit Galahad, officially named the 5307th Composite Unit (Provisional), was a United States Army long range penetration special operations jungle warfare unit, which fought in the Southeast Asian theater of World War II, or China-Burma-India Theater (CBI). The unit became famous for its deep-penetration missions behind Japanese lines, often engaging Japanese forces superior in number.