 As the fuel passes through the flame, it is ignited and propelled towards the target.The concept of throwing fire as a weapon has existed since ancient times.The Periplus of the Erythrean Sea mentions the use of a flame-thrower by the Early Cholas of India by around 50 AD , and the usage of flamethrowers by the later Imperial Cholas during the Battle of Kedah in the 11th century is depicted in a Siamese mural.