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Well the most obvious one of the 20th century would be the improvement of bombs and specifically ones delivered from the air.

Aerial bombing was introduced early during the First World War (1914-1918). Essentially in early bombing campaigns the pilots simply tossed hand-grenades out of the planes on top of enemy positions. Both the German and the British quickly realized that this was a way to damage enemy installations with fair accuracy.

They then developed all sorts of gravity bombs that could be dropped by hand, and eventually attached to rail systems under the plane.

During the Second World War saw the improvement of these types of munitions which went on to include extremely heavy payloads dropped by large bombers; yes, the bomber had to be developed to accommodate these munitions and deliver them long distances and accurately.

There were several innovations in this respect including incendiary bombs, culminating with the two most notorious bombs of all - Little Boy and Fat Man, the two nuclear bombs that were dropped at the end of World War Two.

During the Cold War, flying fortresses on both the side of the USA and USSR were developed to extend the delivery platform to an intercontinental level, along with ICBM's.

During the last part of the 20th Century a host of air dropped munitions were developed from cluster bombs to smart munitions that could be guided by infra red or radar onto a target once released from the plane. This included "bunker busting" and thermobaric or fuel-air bombs.

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11y ago

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