Different warheads were used, including explosive, shrapnel and incendiary. These later waves dropped a combination of high explosive and incendiary bombs. WP grenades double as incendiary grenades. However, by mid-1916 an effective mixture of explosive, tracer and incendiary rounds had been developed. These burns were inflicted on prisoners using phosphorus material extracted from incendiary bombs. The protesters reacted by using incendiary bombs. They include smoke and incendiary grenades. Bomber Command had exhausted its supplies of incendiary bombs. She also uses concussion and incendiary pumpkin bombs. He ordered an attack with rockets which acted as makeshift incendiary devices. The particular incendiary used in these cannon was most likely a gunpowder mixture. Armor-piercing, incendiary, tracer and other special ammunition is banned. Wilkes ordered the village to be attacked with rockets which acted as makeshift incendiary devices. Such large machine-thrown bolts were ideal for incendiary weapons. Such shelters would provide the men within protection against missiles and incendiary devices.