Editing Second World War (section)

== Technology and warfare ==
The Second World War accelerated the development of radar, codebreaking, long-range aircraft, carrier warfare, submarines, armoured warfare, rockets, amphibious operations, and nuclear weapons.

Air power became central to the war. Strategic bombing targeted ports, factories, railways, oil facilities, airfields, cities, and military infrastructure. Carrier warfare became decisive in the Pacific after Pearl Harbor, the Coral Sea, Midway, and later island campaigns.

Armoured warfare shaped the early German campaigns in Poland, western Europe, and the Soviet Union. Later in the war, Allied production and Soviet manpower shifted the balance against Germany.

Signals intelligence had major military importance. British and Allied codebreaking against German Enigma traffic helped protect Atlantic convoys and supported operational planning. Radar improved air defence, naval detection, and anti-submarine warfare.

The Manhattan Project produced the atomic bombs used against Hiroshima and Nagasaki. These remain the only nuclear weapons used in war.