| M9 half-track | |
|---|---|
 Preserved M9A1 half-track | |
| Type | Half-track armored personnel carrier |
| Place of origin | United States |
| Service history | |
| In service | 1943–present |
| Used by | See users list |
| Wars | World War II Arab-Israeli War of 1948 Korean War Suez Crisis Vietnam War[citation needed] Indo-Pakistani War Six-Day War Yom Kippur War Lebanese Civil War[citation needed] |
| Production history | |
| Designer | International Harvester |
| Designed | 1940–1941 |
| Manufacturer | International Harvester |
| Produced | 1942–1944 |
| No. built | 3,500 |
| Specifications ([2]) | |
| Mass | 9.3 short tons (8.4 t) |
| Length | 20 ft 7 in (6.28 m) wheelbase 135.5 in (3.44 m) |
| Width | 7 ft 3 in (2.22 m) |
| Height | 7 ft 5 in (2.26 m) |
| Crew | 3 |
| Passengers | 10 troops |
| Armor | 8–16 mm (0.31–0.63 in)[1] |
Main armament | 1 × 0.50 inch (12.7 mm) M2 Browning machine gun |
Secondary armament | 2 × 0.30 inch (7.62 mm) M1919 Browning machine guns |
| Engine | IHC RED-450-B 141 hp (105 kW) |
| Suspension | wheels at front single bogie vertical volute spring tracks at rear |
| Fuel capacity | 60 US gal (230 L) |
Operational range | 125 mi (201 km) |
| Maximum speed | 42 mph (68 km/h) |
The M9 half-track was a half-track produced by International Harvester in the United States during World War II for lend-lease supply to the Allies. It was designed to provide a similar vehicle to the M2 half-track car. It had the same body and chassis as the M5 half-track (also built by International Harvester for lend-lease) but had the same stowage and radio fit as the M2 half-track.
The M9 served for a significant amount of time. 3500 were produced by the end of World War II. It was used during World War II, the Arab-Israeli War of 1948, the Korean War, the Suez Crisis, the Vietnam War, the Six-Day War, and the Yom Kippur War. It had been used by eleven countries by the end of its service.[citation needed]