Pryce-Jones did his
National Service in the
Coldstream Guards, in which he was commissioned in 1955, promoted lieutenant in 1956, and served in the
British Army of the Rhine. In 1956, Pryce-Jones lectured the men under his command about the necessity of the
Suez War, but admits that he did not believe what he was saying. At the time, he believed that the Islamic world would soon progress after decolonization, and was disappointed when this did not happen. which has been praised by Pryce-Jones as "prophetic". The American diplomat
Philip H. Gordon gave a highly unfavorable review of
Betrayal in
Foreign Affairs, describing the book as a French-bashing "polemic" disguised as a work of history. Gordon accused Pryce-Jones of hypocrisy, noting that he took successive French governments to task for supporting Middle Eastern dictators like President
Saddam Hussein of Iraq while failing to note that both the United States and the United Kingdom have also supported Middle Eastern dictators. Gordon wrote that Pryce-Jones's claim that French President
Jacques Chirac was guilty of "perfidy" towards the West by opposing the
Iraq War in 2003 was unfair, writing in 2007 that much of what happened in Iraq since 2003 appeared to justify Chirac's predictions of a debacle if the United States invaded. Pryce-Jones wrote a biography,
Evelyn Waugh and His World (1973). It was rather notorious for digging up conflict among the married Mitford siblings, with
Pamela accusing
Jessica of revealing private correspondence concerning their sister the
Duchess of Devonshire. The 1976 biography
Unity Mitford: A Quest followed, despite alleged efforts by some of
Unity Mitford's sisters to prevent Pryce-Jones from doing his research and publishing the book. He was elected a Fellow of the
Royal Society of Literature in 1980. ==Personal life and death==