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E-21. Generally, tank armor provides excellent protection to the crew. Across the frontal 60-degree arc, the tank is impenetrable to all weapons, except heavy antitank missiles or guns, and the main gun-on-enemy tanks. When fighting with the hatches closed, the crew is impenetrable to all small-arms fire, artillery rounds (except a direct hit), and antipersonnel mines. The tank’s smoke grenade launcher and on-board smoke generator provide rapid concealment from all but thermal observation.
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Go Back To: U.S. Army FM 3-21.8: The Infantry Rifle Platoon and Squad