In 1947, after the Second World War, he became Educational Advisor to the Control Commission in the British Zone in Germany, responsible for educational reconstruction, and played an important role in the rewriting of Nazi history textbooks, removing their racist bent. From 1947 to 1949 he gave important support to Lilo Milchsack who formed the Anglo-German Association to improve post-war relations. Birley returned to support these efforts after he left Germany in 1949.[2]