Tipu Sultan (d.1799) Weapons Research, Warrior EmpireReferences to the "The Star-Spangled Banner" the national anthem of the United States of America. The lyrics come from a poem written in 1814 by Francis Scott Key, a then 35-year-old amateur poet who wrote "Defence of Fort McHenry" after seeing the bombardment of Fort McHenry at Baltimore, Maryland, by Royal Navy ships using Tipu Sultan's design of rockets in Chesapeake Bay during the War of 1812. "And the rockets' red glare, the bombs bursting in air" A military tactic developed by Tippu Sultan and his father, Haidar Ali was the use of mass attacks with Rocket artillery brigades on infantry formations. Tippu Sultan wrote a military manual called Fathul Mujahidin in which 200 rocket men were prescribed to each Mysorean "cushoon" (brigade). Mysore had 16 to 24 cushoons of infantry. The areas of town where rockets and fireworks were manufactured were known as Taramandal Pet ("Galaxy Market"). The rocket men were trained to launch their rockets at an angle calculated from the diameter of the cylinder and the distance of the target. In addition, wheeled rocket launchers capable of launching five to ten rockets almost simultaneously were used in war. Rockets could be of various sizes, but usually consisted of a tube of soft hammered iron about 8 inches long and 1.5 to 3 inches diameter, closed at one end and strapped to a shaft of bamboo about 4 ft long. The iron tube acted as a combustion chamber and contained well packed black powder propellant. A rocket carrying about one pound of powder could travel almost 1,000 yards. In contrast, rockets in Europe not being iron cased, could not take large chamber pressures and as a consequence, were not capable of reaching distances anywhere near as great.