Complex sentence: During the war he was a Director of BMW, but left the board on 1945 and in 1947 joined AFN Ltd at the persuasion of H.J. Aldington.
Split into simpler sentences: During the war he was a Director of BMW, but left the board in 1945. In 1947 Fiedler joined AFN Ltd at the persuasion of H.J. Aldington.