What development in World War II improved aerial combat efficiency?

During World War II, radar technology significantly improved aerial combat efficiency by providing pilots and ground control with critical information regarding enemy aircraft locations and movements. This enabled better situational awareness, allowing for more strategic decision-making in air engagements.

Radar systems allowed for early detection of incoming enemy fighters and bombers, which gave defenders a crucial edge in preempting attacks. As a result, forces using radar could respond more effectively to threats, coordinate defensive measures, and execute tactical assaults with greater precision. This technological advancement fundamentally altered the dynamics of air warfare by reducing the element of surprise and enabling more informed tactics.

While the other developments listed also contributed to aviation capabilities, radar stands out during this period for its immediate impact on aerial combat effectiveness, enhancing the ability to track targets and manage engagements in real time.