| 1. | The M3 trench knife was discontinued in August 1944.
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| 2. | The M3 replaced the earlier World War I-vintage Mark I trench knife in combat service.
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| 3. | Though not a true " trench knife " per se, the Fairbairn-Sykes was used for similar purposes.
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| 4. | The U . S . Army adopted the M3 Trench Knife in 1943 as its standard combat knife.
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| 5. | She watched a sergeant whose hair was matted and disheveled as he ate his food with a trench knife.
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| 6. | Hughes went on to patent his automatic trench knife in 1919, though it appears to have never interested any civilian manufacturers.
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| 7. | American-made steel scabbards for the Mark I trench knife were marked " L . F . & C . 1918 ".
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| 8. | The basic blade design was like the M4, M5, and later M7 bayonets, based on the World War II designed M3 Trench Knife.
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| 9. | The menacing looking knife used by the Night Slasher is a brass knuckles or more like a spiked knuckles, modern version of a trench knife.
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| 10. | The Mark I trench knife was replaced in Army service by the "'USMC Mark 2 Combat Knife "'aka the "'USMC Knife, Fighting Utility " '.
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