Very Unusual Air War
From Dunkirk to AFDU : the Diary and Log Book of Test Pilot Leonard Thorne 1940-45eBook - 2013
From Library Staff
Len Thorne was only 20 when he joined the RAF. After several low-flying operations in a fighter, including Dunkirk, he spent the rest of the war with AFDU (Air Fighting Development Unit) as a test pilot, performing a different kind of hazardous duty.