Napalm

Napalm is a flammable liquid used in warfare. It is a mixture of a gelling agent, and either petroleum or a similar fuel. It was initially used as an incendiary device against buildings and later primarily as an anti-personnel weapon, as it sticks to skin and causes severe burns when on fire. Napalm was developed in 1942 in a secret laboratory at Harvard University, by a team led by chemist Louis Fieser. Its first recorded use was in the European theatre of war during World War II. It was used extensively by the US in incendiary attacks on Japanese cities in World War II as well as during the Korean War and Vietnam War.