1915: On October 24, 1915, an estimated 400 Cacos ambushed Butler's patrol of 44 mounted Marines when they approached Fort Dipitie.
1924: At the urging of Butler's father, in 1924, the newly elected mayor of Philadelphia W. Freeland Kendrick asked him to leave the Marines to become the Director of Public Safety, the official in charge of running the city's police and fire departments.
1929: When Butler returned to the United States in 1929 he was promoted to major general, becoming, at age 48, the youngest major general of the Marine Corps.
1934: In November 1934, Butler claimed the existence of a political conspiracy by business leaders to overthrow President Roosevelt, a series of allegations that came to be known in the media as the Business Plot.
1935: In 1935, he wrote the exposé War Is a Racket, a trenchant condemnation of the profit motive behind warfare.
1940: On June 21, 1940, Smedley Butler died in the Naval Hospital in Philadelphia.