An incendiary bomb (or firebomb) was an explosive device designed to start a fire.
In 1937, Guernica was bombed with incendiaries by the Luftwaffe. (PROSE: History 101)
During the Blitz, the Luftwaffe dropped incendiary bombs on London. When the Daleks turned all the lights in the city on, some were dropped in the East End. (TV: Victory of the Daleks)
The Dalek supreme command ordered for London to be destroyed with incendiary bombs during the 22nd century Dalek invasion. (TV: The Dalek Invasion of Earth)
Strax was equipped with incendiary bombs and used one to destroy the origami birds that attacked Clara Oswald whilst she was investigating a deserted factory on Alberneath Avenue. (PROSE: Silhouette)