It never served in combat as it wasn't really a success. The first US combat jet was the P-80 Shooting Star
The article says the aircraft was "deployed to active service" in 1944, but this is misleading. They may mean the date in which it was first delivered to the USAAF. Its top speed of 413 mph was slower than most piston-engined fighters of the time (which is why they couldn't just fly away from the nosey P38 pilots). But the point is that the jet engine was, as we know capable of futher development, whereas piston engines were getting to the point of being impossible to develop further. The P80 was just too late to see combat in WW2.
The Americans could have had jets earlier except for the fact that they kept cancelling orders etc. This is a good history of the P-59 Bell P-59 Airacomet
Actually 2 P-80's flew operational (though not seeing combat) missions in Italy prior to the end of the war.
