Gwen Watkins, who has died aged 101, deciphered German air force codes at Bletchley Park during the second world war, helping RAF and US Army air force fighter aircraft to combat Luftwaffe bombers, and allied reconnaissance aircraft and bombers to evade German air defences.
Watkins joined the Women’s Auxiliary Air Force in 1941 and in May the following year was sent to Bletchley Park, the allied codebreaking centre in Buckinghamshire, as a result of her fluency in German. She was put to work in the air section, unravelling the Luftwaffe’s three-letter and three-figure enciphered codes, initially in Hut 10 and then, from early 1943, in Block F, one of a number of new concrete units that replaced the old huts.
