In 1945, he served as Special Assistant to the Director of the State Department's Office of European Affairs, and then as chief of the Division of British Commonwealth Affairs 1945-48. He became a Foreign Service Inspector in 1948, and Chief Inspector of the Foreign Service Inspection Corps in 1951.
Eisenhower then named Wailes United States Ambassador to Hungary, with Ambassador Wailes receiving his commission on July 26, 1956. At the time of this appointment, the People's Republic of Hungary was ruled by the Hungarian Communist Party, under Prime Minister of HungaryAndrás Hegedüs. The Hungarian Revolution of 1956 began on October 23, 1956, with crowds demanding the return of former prime minister Imre Nagy, who had pledged to lead Hungary out of the Warsaw Pact and promised democratic reforms. The next day, Nagy took over as prime minister. On the advice of Soviet Ambassador to Hungary Yuri Andropov, Hegedüs fled to the Soviet Union and signed papers asking for Soviet intervention in Hungary to stop Nagy. Wailes arrived in Hungary on November 2, 1956. Soviet tanks entered Budapest on November 4, Nagy fled, and the pro-Soviet János Kádár became Prime Minister of Hungary. The Hungarian Revolution ended on November 10, with the Soviets having succeeded in blocking any movement towards democratic reforms in Hungary. Wailes refused to present his credentials to the new government, stating that the government "did not represent the people." Shortly thereafter he was "recalled for consultations" and left Hungary on February 27, 1957.
Wailes married Cornelia Lyon Wailes, daughter of Emily Dill (née Lyon) and Henry Stephenson Wailes, of Salisbury, Maryland, on December 30, 1933.[4][5] Following his retirement, they lived in Washington, D.C.[3]
Wailes had a heart attack and died on June 25, 1969, in New York City. He was buried in Rock Creek Cemetery.[3]
Legacy
Following the death of his wife, The Cornelia and Edward Thompson Wailes College Center was named in their honor at Sweet Briar College.[5]