A blockbuster bomb or cookie was one of several of the largest conventional bombs used in World War II by the Royal Air Force (RAF). The term blockbuster was originally a name coined by the press and referred to a bomb which had enough explosive power to destroy an entire street or large building through the effects of blast in conjunction with incendiary bombs.
A Lancaster drops first "Window" to disrupt enemy radar, then a 4,000 pound blockbuster bomb and incendiary bombs during Operation Hurricane against Duisburg on 14/15 October 1944
Standard American AN-M56 4,000 lb (1.8 t) general-purpose bomb
57 Squadron Avro Lancaster with the "Usual" area bombing load of a 4,000 lb (1.8 t) bomb and 12 Small Bomb Containers, each filled with 4 lb (1.8 kg) incendiary bombs
A 4,000-lb HC bomb, marked "Happy Xmas Adolf" being loaded onto a de Havilland Mosquito of No. 128 Squadron RAF
Incendiary weapons, incendiary devices, incendiary munitions, or incendiary bombs are weapons designed to start fires or destroy sensitive equipment using fire, using materials such as napalm, thermite, magnesium powder, chlorine trifluoride, or white phosphorus. Though colloquially often known as bombs, they are not explosives but in fact are designed to slow the process of chemical reactions and use ignition rather than detonation to start or maintain the reaction. Napalm, for example, is petroleum especially thickened with certain chemicals into a 'gel' to slow, but not stop, combustion, releasing energy over a longer time than an explosive device. In the case of napalm, the gel adheres to surfaces and resists suppression.
Mark 77 napalm bomb is loaded in a June 1993 training exercise onto a US Marine Strike Fighter Squadron F/A-18A Hornet aircraft
A 17th century fire or light ball from Veste Coburg, Germany
An incendiary bomb dropped on Southend-on-Sea in 1916
A German World War II 1 kg incendiary bomb