Complex sentence: He wrote two memoirs, "Specially Employed" (1952) and "They Fought Alone" (1958), but they are not to be relied upon, and he was interviewed for the 1969 documentary "The Sorrow and the Pity".
Split into simpler sentences: He wrote two memoirs, "Specially Employed" (1952) and "They Fought Alone" (1958). He was interviewed for the 1969 documentary "The Sorrow and the Pity".