At the end of May 1942, Eisenhower accompanied Lt. Gen. Henry H. Arnold, commanding general of the Army Air Forces, to <answer>London</answer> to assess the effectiveness of the theater commander in England, Maj. Gen. James E. Chaney. He returned to Washington on June 3 with a pessimistic assessment, stating he had an "uneasy feeling" about Chaney and his staff. On June 23, 1942, he returned to <answer>London</answer> as Commanding General, European Theater of Operations (ETOUSA), based in <answer>London</answer> and with a house on Coombe, Kingston upon Thames, and replaced Chaney. He was promoted to lieutenant general on July 7.
To what city did Eisenhower travel to May 1942?
London