Fifth-generation fighters represent a significant leap in air combat capabilities, incorporating advanced technologies that revolutionize aerial warfare. These cutting-edge aircraft, such as the F-35 Lightning II and the Chengdu J-20, boast exceptional stealth characteristics, enabling them to operate undetected deep within enemy territory. They leverage advanced sensor fusion systems that integrate data from multiple sources, providing pilots with unprecedented situational awareness and enabling them to make informed decisions in real-time. The fifth-generation fighters also employ advanced avionics and highly integrated computer systems, enabling them to communicate seamlessly with other friendly assets, enhancing overall mission effectiveness and interoperability. These fighters are equipped with advanced radar systems, enabling them to detect and track enemy aircraft from long ranges. Additionally, they possess exceptional maneuverability and speed, allowing them to engage and defeat adversaries in both close-in dogfights and beyond visual range engagements. The fifth generation of fighters has set a new benchmark in air combat capability, ensuring dominance in the skies and the ability to project power with unrivaled precision.

'Into service' - defined according to the Wikipedia page for the type