Fathul Mujahidin
Fathul Mujahidin, was written in 1783 by Zainul Abedin Shustari at the instruction of Tipu Sultan, is a work on the rules and regulations for the army describing the duties of a soldier engaged in Jihad (Holy War). Mysore started to equip their army with rockets in the 1750s and during the Second Anglo–Mysore War Tipu and his father Haider Ali used this technology against British troops. Tipu Sultan used rockets in battle against the British in the 1792 Siege of Srirangapatna, a battle at the end of the Third Anglo-Mysore War.
Tipu distributed copies of his military manual to all of his officers. In the manual he defined 200 men to handle rockets within each of the Mysore, with 16 to 24 cushoons of infantry. The personnel handling the rockets were trained to define the launch angle to properly affect the curve at which the rocket would land. Tipu also defined in the manual a multiple rocket launcher that would launch up to 10 rockets. Some of the rockets had blades in the front of the bamboo guiding rods, while others were designed as incendiary rockets.
Although not the first use of rockets by Mysore, the 1792 Siege of Srirangapatna reportedly began with showers of as many as 2,000 rockets fired simultaneously.
According to Stephen Oliver Fought and John F. Guilmartin, Jr. in Encyclopædia Britannica :