The document discusses the history and characteristics of fighter aircraft. It covers that fighter aircraft are military planes used to attack other aircraft unlike bombers, and that they are small and highly maneuverable. It then provides brief summaries of the roles of fighter aircraft in World War 1 where they hunted enemy reconnaissance and balloons with low engine power, and in World War 2 where they became more important and had improved engine power, notably during blitzkrieg attacks. It concludes with a reference to video on demand.