if I had to pick one to be with:
56 Squadron, RAF
Operated Hurricane Is over France in 1940, then to Hurri IIs in early 1941 before becoming the first squadron to transfer to the Typhoon in mid-1941. Operated Tyffies until April 1944 then spent 3 months in Spitfire IXs over Normandy, providing air defence. Were the first squadron to fully transferr to Tempest Vs (in July 1944) and spent the rest of the war under the 2 TAF operating from the continent as low level superiority fighters.
Did almost everything there is to do with fighters in the ETO:
Short range intercepts during the BoB. Ran escorts over France in 1941, pioneered the use of drop tanks on the Typhoon and did long range hunt and destroy missions over France in 1942. Saw action over England, Dieppe, Normandy, Germany and the low countries. Attacked transport, trains and ground installations in the lead up to Overlord. Chased V1s and bombed V2 installations. Broke in TWO new fighters and recorded close to 300 kill claims for the war.