What were the effects of technology during WWII?

Technology changed the face of warfare during World War II.
Aerial warfare advanced over its beginnings in the First World War and became a significant part of the offensive strategies of both the Allied and the Axis powers. By the end of the war, most major German cities had been laid waste from repeated, and severe, aerial bombardments. One effect was that civilians became part of the battlefield in a way that had not been seen before.
Near the end of the war, the Germans developed rockets and launched missiles against England without having to use fighter planes. This technology helped launch the space program in the US after the war, especially as our country brought in former Nazi scientists like Wernher von Braun to help us develop our space technology.
Radar, a new technology developed in the 1930s utilizing microwaves, allowed both sides to track the movement of planes and other enemy weapons without having to rely on eyesight. This made defense easier because each side (usually) knew when an attack was coming.
The most significant technological development of World War II, however, was the atomic bomb. Because of its destructive capacity, it gave the United States an overwhelming advantage over Japan and quickly led to US victory over its enemy. Nuclear weaponry, with its potential for mutually assured destruction, changed the face of warfare. No longer could two armies meet on the ground in a "total war" encounter, such as did the huge armies that met and fought on the Eastern front during World War II. Since the end of World War II, total war has meant the potential for the total destruction of the human race. Therefore, powerful nations have concentrated on waging limited wars without the use of nuclear weapons.