If the People's Liberation Army went to war tomorrow, it would field an arsenal bristling with hardware from some of America's closest allies: Germany, France and Britain. Most of China's advanced surface warships are powered by German and French-designed diesel engines. Chinese destroyers have French sonar, anti-submarine-warfare helicopters and surface-to-air missiles. Above the battlefield, British jet engines drive PLA fighter bombers and anti-ship strike aircraft. The latest Chinese surveillance aircraft are fitted with British airborne early warning radars. Some of China's best attack and transport helicopters rely on designs from Eurocopter, a subsidiary of pan-European aerospace and defense giant EADS.