Editing Douglas MacArthur (section)

===Army's youngest major general===
MacArthur became romantically involved with socialite and multi-millionaire heiress [[Louise Cromwell Brooks]]. They were married at her family's villa in Palm Beach, Florida, on 14 February 1922. Rumors circulated that General Pershing, who had also courted Louise, had threatened to exile them to the Philippines if they were married. Pershing denied this as "all damn poppycock".{{sfn|James|1970|p=291}} More recently, Richard B. Frank has written that Pershing and Brooks had already "severed" their relationship by the time of MacArthur's transfer; Brooks was, however, "informal[ly]" engaged to a close aide of Pershing's (she broke off the relationship in order to accept MacArthur's proposal). Pershing's letter concerning MacArthur's transfer predated—by a few days—Brooks's and MacArthur's engagement announcement, though this did not dispel the newspaper gossip.{{sfn|Frank|2007|pp=14–15}} In October 1922, MacArthur left West Point and sailed to the Philippines with Louise and her two children, Walter and Louise, to assume command of the Military District of Manila.{{sfn|Manchester|1978|pp=130–132}} MacArthur was fond of the children, and spent much of his free time with them.{{sfn|James|1970|p=320}}

[[File:MacARTHUR, DOUGLAS. GENERAL LCCN2016859444 (cropped).jpg|thumb|MacArthur {{circa|1925}}]]
The [[Philippine–American War|revolts in the Philippines]] had been suppressed, the islands were peaceful now, and in the wake of the [[Washington Naval Treaty]], the garrison was being reduced.{{sfn|James|1970|pp=295–297}} MacArthur's friendships with Filipinos like [[Manuel Quezon]] offended some people. "The old idea of colonial exploitation", he later conceded, "still had its vigorous supporters."{{sfn|MacArthur|1964|p=84}} In February and March 1923 MacArthur returned to Washington to see his mother, who was ill from a heart ailment. She recovered, but it was the last time he saw his brother Arthur, who died suddenly from [[appendicitis]] in December 1923. In June 1923, MacArthur assumed command of the 23rd Infantry Brigade of the [[Philippine Division (United States)|Philippine Division]]. On 7 July 1924, he was informed that a mutiny had broken out amongst the [[Philippine Scouts]] over grievances concerning pay and allowances. Over 200 were arrested and there were fears of an insurrection. MacArthur was able to calm the situation, but his subsequent efforts to improve the salaries of Filipino troops were frustrated by financial stringency and racial prejudice. On 17 January 1925, at the age of 44, he was promoted, becoming the Army's youngest major general.{{sfn|James|1970|pp=300–305}}

Returning to the U.S., MacArthur took command of the [[Corps area|IV Corps Area]], based at [[Fort McPherson]] in Atlanta, Georgia, on 2 May 1925.{{sfn|James|1970|pp=307–310}} However, he encountered southern prejudice because he was the son of a Union Army officer, and he requested to be relieved.{{sfn|Rhoades|1987|p=287}} A few months later, he assumed command of the III Corps area, based at [[Fort McHenry]] in Baltimore, Maryland. The transfer allowed MacArthur and Louise to move to her Rainbow Hill estate, near [[Garrison, Maryland]].{{sfn|James|1970|pp=307–310}} However, this relocation also led to what he later described as "one of the most distasteful orders I ever received":{{sfn|MacArthur|1964|p=85}} a direction to serve on the court-martial of Brigadier General [[Billy Mitchell]]. MacArthur was the youngest of the thirteen judges, none of whom had aviation experience. Three of them, including Summerall, the president of the court, were removed when defense challenges revealed bias against Mitchell. Despite MacArthur's claim that he had voted to acquit, Mitchell was found guilty as charged and convicted.{{sfn|James|1970|pp=307–310}} MacArthur felt "that a senior officer should not be silenced for being at variance with his superiors in rank and with accepted doctrine".{{sfn|MacArthur|1964|p=85}}

In 1927, MacArthur and Louise separated,{{sfn|James|1970|p=322}} and she moved to New York City, adopting as her residence the entire twenty-sixth floor of a [[Manhattan]] hotel.{{sfn|Borneman|2016|pp=32–34}} In August that year, [[William C. Prout]]—the president of the [[United States Olympic & Paralympic Committee|American Olympic Committee]]—died suddenly and the committee elected MacArthur as their new president. His main task was to prepare the [[United States at the 1928 Summer Olympics|U.S. team]] for the [[1928 Summer Olympics]] in Amsterdam, where the Americans won the most medals.{{sfn|James|1970|pp=325–332}} Upon returning to the U.S., MacArthur received orders to assume command of the [[Philippine Department]].{{sfn|James|1970|pp=325–332}} This time, the general travelled alone.{{sfn|Borneman|2016|pp=32–34}} On 17 June 1929, while he was in Manila, Louise obtained a divorce, ostensibly on the grounds of "failure to provide".<ref name="NYT 18 June 1929" /> In view of Louise's great wealth, [[William Manchester]] described this legal fiction as "preposterous".{{sfn|Manchester|1978|p=141}} Both later acknowledged the real reason to be "incompatibility".{{sfn|Frank|2007|pp=14–15}}