American forces in England 1942

In 1942 my grandfather, Walter Wells, was foreman in charge of the British workmen constructing an aerodrome for the RAF at Aldermaston which in June 1942 was given to the American AAF for use as a transport base. The first American army personnel to arrive were the Seabees (Construction Battalion). One evening as my grandfather was cycling home he was stopped by a GI who asked him to post a letter for him as the GI was not allowed off the base. Grandad took the letter and put it on the table in the sitting room of the house which my family had rented. My father was home on leave at the time so there were five of us in the room at the time; father, mother, myself Grandma and Grandad. My father picked up the letter and read the name and address. It was addressed to my father's mother who lived in London at the time. The American GI was my father's nephew, his name was Adolf Ravitz. My father's sister, Fanny, had been a GI bride at the end of WW1. Adolf (an unfortunate name at the time) did visit our house but, unfortunately, I never met him as I was at school during the hours that he came. He was killed in the Ardennes in 1944 so I never did meet him.