 Complete the following phrase:  In 1971, Irving translated the memoirs of General Reinhard Gehlen, and in 1973 published The Rise and Fall of the Luftwaffe, a biography of Field Marshal Milch. He spent the remainder of the 1970s working on Hitlers War and The War Path, his two-part biography of Adolf Hitler; The Trail of the Fox, a biography of Field Marshal Erwin Rommel; and a series in the Sunday Express describing the Royal Air Forces famous 