Yuma War
The Yuma War was the name given to a series of United States military operations conducted in southern California and what is today southwestern Arizona from 1850 to 1853. The Yumans were the primary opponent of the United States Army, though engagements were fought between the Americans and other native groups in the region. Conflict generally took the form of guerrilla warfare, and, over the course of three years, the army engaged in pursuing unfriendly natives, protecting American settlers crossing the Colorado River and preventing conflict between the native tribes. A peace treaty in summer of 1853 was signed, ending hostilities between the Yuma and the United States, but it sparked a short war between the Yuma and the Cocopah. During the conflict, the historic Fort Yuma was constructed and became an important outpost on the frontier.
Spanish–American War
The war lasted ten weeks. John Hay (the United States Ambassador to the United Kingdom), writing from London to his friend Theodore Roosevelt, declared that it had been "a splendid little war". The press showed Northerners and Southerners, blacks and whites fighting against a common foe, helping to ease the scars left from the American Civil War. Exemplary of this was the fact that four former Confederate States Army generals had served in the war, now in the U.S. Army and all of them again carrying similar ranks. These officers included Matthew Butler, Fitzhugh Lee, Thomas L. Rosser and Joseph Wheeler, though only the latter had seen action. Still, in an exciting moment during the Battle of Las Guasimas, Wheeler apparently forgot for a moment which war he was fighting, having supposedly called out "Let's go, boys! We've got the damn Yankees on the run again!"