Infantry Drills

H-157: Concertina Roadblock

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H-157. The concertina roadblock is placed across roadways and designed to block wheeled or tracked vehicles. The roadblock is constructed of 11 concertina rolls or coils placed together, about 10 meters in depth, reinforced with long pickets five paces apart. The rolls or coils should not be tautly bound allowing them to be dragged and tangled around axles, tank road wheels, and sprockets. Additionally, wire is placed horizontally on top of the concertina rolls or coils. (See figure H-24.)

Figure H-24. Eleven-row anti-vehicular wire obstacle

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Go Back To: U.S. Army FM 3-21.8: The Infantry Rifle Platoon and Squad