european theater of operations

With the arrival of the B-17F how long did the "E" stick around in the European theater? It was quite prominent in the Pacific and if i recall correctly, North Africa as well. While I can find some photos of them in Europe, I'm unable to figure out how long they were there before they were...

So far I can't find any information regarding my question. Pretty recently I learned that when it comes to US Air Forces the 8th Air Force was the only one that used 150 octane fuel and I'm trying to figure out how common it was for a German pilot to encounter another fighter running on 150...

My father, T/Sgt Leslie Pelham Pitts, was a top turret gunner and flight engineer of a B-17 in the 731st Bomb Squadron, 452nd Bomb Group, based at Deopham Green Airfield in England from November 1944 until the end of the war in Europe. He flew 29 missions with the last two being food drop...