Invasion of Mexico
Part of the American Front of World War I
1914 Occupation of Veracruz
U.S. Marines raising the American flag above Mexico City in 1916
Date 24 March 1915 – 17 September 1916
Location Mexico
Result American victory
U.S. annexation of Baja California, Chihuahua, Sonora, and British Honduras
US flag 48 stars United States Flag of Mexico (1893-1916) Mexico
Flag of the United Kingdom United Kingdom
Commanders and leaders
US flag 48 stars Henry IV
US flag 48 stars Theodore Roosevelt
US flag 48 stars Leonard Wood

The Invasion of Mexico was an American offensive into the United Mexican States after the revelations of Anglo-Mexican military cooperation and the result of poor relations between the United States and Mexico.