He rejoined the circuit once, only to find that traffic was heavy. He squeezed in to a vacant spot and continued contented like all the others until he realised that when each one reached the downwind end of the downwind leg he continued crosswind at circuit height past the runway to upwind, with no hint of descending to finals and landing, and so round again.
That was when he worked out that he was only Me 109 in a Schwarm of
P.51s, and that was when he put the nose right down to he deck and departed.