Incendiary Mortar
A type of mortar that fires incendiary rounds, designed to start fires and inflict damage on enemy positions or structures. Used during World War II to disrupt enemy operations and deny them cover.
Interceptor Aircraft
A type of fighter aircraft specifically designed for intercepting enemy aircraft in flight. These aircraft were typically fast, maneuverable, and armed with powerful cannons or missiles. The British Spitfire and American P-51 Mustang were notable examples used during World War II.
Insignia
Distinctive symbols or emblems worn on military uniforms, indicating rank, unit, or nationality. Insignia played a crucial role in identification, communication, and fostering unit pride during World War II.
Insurgency
An organized resistance or rebellion against an established government or occupying force. While not a major factor in World War II itself, insurgencies played a role in various theaters, such as the French Resistance against Nazi occupation.
Intercontinental Ballistic Missile (ICBM)
A long-range ballistic missile capable of traveling across continents, delivering nuclear warheads. While not used during World War II, the development of ICBMs after the war significantly changed the strategic landscape and fueled the Cold War arms race.
Independent Tank Destroyer
A specialized armored vehicle designed solely for the purpose of destroying enemy tanks. These vehicles were often lightly armored but equipped with powerful anti-tank guns. The M18 Hellcat was a notable example used by the United States during World War II.
Interrogation
The process of questioning prisoners of war or captured enemy personnel to extract information. Interrogation was a crucial intelligence-gathering technique used by both Allied and Axis forces during World War II.
Infiltration
The secret entry into enemy territory, often by small groups of soldiers, to gather intelligence, disrupt enemy operations, or sabotage infrastructure. Infiltration played a significant role in espionage and sabotage during World War II.
Invasion
A military operation involving the forceful entry into enemy territory, often by land, sea, or air. Major invasions, such as the Normandy landings, were defining moments of World War II, shaping the course of the war.
Interception
The act of intercepting enemy aircraft or missiles in flight, often using fighter aircraft or anti-aircraft weaponry. Interception was crucial in World War II for air defense, protecting allied aircraft and ground targets from enemy attacks.