Land Mattress

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The so-called land mattress was a ground weapon named after its naval equivalent. It was originally developed by Lt. Col. Michael Wardell of the British army in 1944.[1] Based on the British Z gun anti-aircraft rockets, it was tested in the summer of 1944 and saw some action with British and Canadian troops, with mixed results. The Land Mattress was based on the 3-inch-diameter (76 mm) tube of the RP-3 or "60-lb" rocket used as an air-to-ground weapon with naval 5-inch shells as warheads and consisted of a 16- or 30-tube launchering system mounted on a towed carriage. The land version had an operational range of 8,000 yd (4.5 mi; 7.3 km). Rounds were fired at a rate of 4 per second. At the crossing of the Scheldt, over a thousand rockets were fired in six hours.