just happened to be researching something and ran right into this....about a captured 51.
from 357th pilots on the arnhem/market garden missions:
Tom Gates' encounter report: "After the last interception, which took us SW of DZ, Tackline advised nothing in view and we could patrol on our own. I dropped the group down to 13,000 and took up a course of 45 degrees back to the DZ. Over the DZ we saw a gaggle of 109s and 190s flying our reciprocal course to our right about 2,000 feet above. I turned the group right to intercept and called "Drop tanks," after clearing gliders underneath. By the time the tanks were off and climb started, the first gaggle of 190s was passing overhead and up into the sun. When it appeared that they would not turn and bounce us from out of the sun, I turned Dollar sqdn back head-on into the second bunch and the fight was on.
"The first bunch turned back but were intercepted by another sqdn. I picked six 109s. They broke left, then sharp right. I got on one but he spun out under me. Another was in the turn so I latched onto him. He was most aggressive, and after much maneuvering he straightened out and I got a short burst which knocked some parts from his ship. The second burst set him on fire and the third burst finished him. He dived in from 500 feet. My wingman was still with me and we climbed back to 10,000 feet. We saw five 109s flying close formation with a flight of P-51s bouncing them. One 109 split-essed out and went to the deck in aileron turns. The others turned into the bounce.
"I took after the one on the deck and let him have a burst from about 1,000 yards but no strikes seen. When he came to an airdrome he made a turn. I closed enough to see American markings on the upper surfaces of both wings and it was a P-51 painted the same as the 109s. There were no group markings on the nose. When I saw it was a P-51, to avoid light flak from the field I widened the turn and the P-51 leveled out and headed SE at full throttle. There is no doubt that it was flown by a German pilot."