and was the first air-to-air rocket used by the Luftwaffe. Photographic evidence indicates that the Hungarians fitted three tubes under each wing of some of their twin-engined Me 210 Ca-1 heavy fighters. The rockets were used to break up Allied bomber combat box formations in order to enable more effective German fighter attacks against the scattered Allied aircraft. However, the high drag caused by the launchers reduced the speed and maneuverability of the launching aircraft, a handicap that could prove fatal if Allied fighters were encountered. Also, the launch tube's underwing mounting setup, which usually aimed the projectile at about 15° upwards from level flight to counter the considerable ballistic drop of the projectile in flight after launch, added to the drag problem. One experimental fitment trial program of up to 33 of the 21 cm rockets, meant to be fired from a single aircraft in an upwards direction (much like the Schräge Musik upward firing autocannon on German Nachtjäger night fighters) was proposed for the Heinkel He 177A as the Grosszerstörer, mounted in the central fuselage and flying below American combat box bomber formations to down them, but the quintet of He 177A-5 airframes set aside for the Grosszerstörer program only flew as experimental airframes, seeing no active combat deployment. Use in combat After the crew had loaded and aimed the launcher, they had to take cover away to avoid the exhaust flames, and would fire the rockets with an electric switch. After firing, however, a long streak of smoke was visible from a considerable distance, leaving the Nebelwerfer vulnerable to counter-battery fire. It was therefore necessary to relocate the launcher and crew as soon as possible after firing. The loud, shrill howling noise of the incoming rockets led Allied soldiers in the Sicily campaign to give it the nicknames "Screaming Mimi" and "Moaning Minnie". Organization Generally, mortars of the Nebeltruppen were organized into batteries of six or eight mortars, three batteries per battalion. The towed rocket launchers had six launchers per battery, three batteries per battalion. Usually, three battalions formed a regiment. Midway through the war brigades were formed, each with two regiments. A regiment was sometimes reinforced with a Panzerwerfer battery of 6-8 vehicles. From 1942, their designations changed from Nebelwerfer to simply Werfer. As part of its general expansion, the Waffen-SS began to form its own Werfer units in 1943, although they never formed any unit