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An electronic system for detecting and tracking objects using radio waves; was decisive during WWII, especially in the Battle of Britain for air defense.

First used in WWI, tanks brought a new dimension to land warfare as armored vehicles capable of crossing difficult terrain and confronting enemy fortifications.

The Longbow, a tall, powerful bow, allowed for high accuracy and long range; was decisive in the Battle of Agincourt (1415) during the Hundred Years' War.

Possess immense destructive power from nuclear reactions; has only been used in warfare twice in 1945, leading to an ongoing era of deterrence known as mutually assured destruction (MAD).

An incendiary weapon whose composition remains a mystery; was crucial for naval battles, helping the Byzantine Empire to control the seas.

A powerful siege engine utilizing a swinging arm to launch projectiles; significantly influenced medieval warfare by breaking through fortifications.

Discovered by the Chinese, the first chemical explosive and propellant had a profound effect on warfare, enabling the invention of guns and artillery.

An instrument used for navigation and orientation; allowed for sea exploration and military navigation, significantly improving naval warfare and trade routes.

Invented in the 1930s, the jet engine revolutionized air combat by providing high speeds and altitudes, which were first witnessed in WWII.

An underwater naval vessel with stealth capabilities; greatly impacted naval combat with the threat of unseen underwater attacks, particularly in both World Wars.

Automatic firearms that can shoot a continuous burst of bullets; revolutionized warfare by increasing firepower and shaping trench warfare during WWI.

A mixed weapon with an axe blade, spike, and hook on a long pole; was a versatile and powerful weapon that could combat both infantry and cavalry effectively in the medieval period.

Aircraft without a human pilot onboard; have transformed modern warfare by allowing for surveillance, targeted strikes and reduced risks to pilots.

A firearm with a grooved barrel that imparts a spin to the bullet, enhancing range and accuracy; forever altered infantry tactics and combat effectiveness.

A ranged weapon with a horizontal bow mounted on a stock; improved upon traditional bow weapons by allowing more energy storage and requiring less skill to operate effectively.

Horse-drawn battle vehicles used in ancient warfare by civilizations like the Egyptians and Hittites; they were crucial for their speed and mobility advantages over infantry.

A chemical weapon used in WWI known for causing severe blistering and respiratory damage; its use marked a new era in the horrors of warfare, leading to international treaties banning its use.

A range of techniques used to make aircraft, ships, and missiles less detectable, especially to radar; has greatly changed modern aerial and naval combat strategies.

The practice of secure communication in the presence of adversaries; from the Caesar cipher to the Enigma machine, it has been vital for secure military communications.