V-2 rocket offensive began on 8 September 1944, when "Lehr- und Versuchsbatterie No. 444" () launched a single rocket guided by a radio beam directed at Paris. Wreckage of combat V-2s occasionally contained the transponder for velocity and fuel cutoff. The painting of the operational V-2s was mostly a ragged-edged pattern with several variations, but at the end of the war a plain olive green rocket also appeared. During tests, the rocket was painted in a characteristic black-and-white chessboard pattern, which aided in determining if the rocket was spinning around its longitudinal axis. The original German designation of the rocket was "V2",
Te-1 rocket propelled mine earlier from its anchorage like the one with directional capability but without the rocket motor. The area control of both type, of course, is much less than the one with rocket motor, but still larger than the Specialized-1, which could only travel in straight line. Te-1 rocket propelled mine The Chinese Specialized-1 (特-1, or Te-1) rocket propelled mine project was started by the 710th Research Institute in 1981, and completed by 1987 after more than 100 major design changes. Specialized-1 is planted by surface ships in up to of water. The maximum speed of the mine is greater than 50