The Cocopah are Native Americans who live in Baja California, Mexico, and Arizona, United States.
Lewis Addison Armistead was a career United States Army officer who became a brigadier general in the Confederate States Army during the American Civil War. On July 3, 1863, as part of Pickett's Charge during the Battle of Gettysburg, Armistead led his brigade to the farthest point reached by Confederate forces during the charge, a point now referred to as the high-water mark of the Confederacy. However, he and his men were overwhelmed, and he was wounded and captured by Union troops. He died in a field hospital two days later.
The New Mexico campaign was a military operation of the Trans-Mississippi Theater of the American Civil War from February to April 1862 in which Confederate Brigadier General Henry Hopkins Sibley invaded the northern New Mexico Territory in an attempt to gain control of the Southwest, including the gold fields of Colorado and the ports of California. Historians regard this campaign as the most ambitious Confederate attempt to establish control of the American West and to open an additional theater in the war. It was an important campaign in the war's Trans-Mississippi Theater, and one of the major events in the history of the New Mexico Territory in the American Civil War.
The Battle of Picacho Pass, also known as the Battle of Picacho Peak, was an engagement of the American Civil War on April 15, 1862. The action occurred around Picacho Peak, 50 miles (80 km) northwest of Tucson, Arizona. It was fought between a Union cavalry patrol from California and a party of Confederate pickets from Tucson.
Stanwix Station, in western Arizona, was a stop on the Butterfield Overland Mail Stagecoach line built in the later 1850s near the Gila River about 80 miles (130 km) east of Yuma, Arizona. Originally the station was called Flap Jack Ranch later Grinnell's Ranch or Grinnell's Station. In 1862, Grinnell's was listed on the itinerary of the California Column in the same place as Stanwix Ranch which became the site of the westernmost skirmish of the American Civil War. A traveler in 1864, John Ross Browne, wrote Grinnell's was six miles southwest of the hot springs of Agua Caliente, Arizona.
The California Column was a force of Union volunteers sent to Arizona and New Mexico during the American Civil War. The command marched over 900 miles from California through Arizona and New Mexico Territory to the Rio Grande and as far east as El Paso, Texas, between April and August 1862.
Fort Yuma was a fort in California located in Imperial County, across the Colorado River from Yuma, Arizona. It was on the Butterfield Overland Mail route from 1858 until 1861 and was abandoned May 16, 1883, and transferred to the Department of the Interior. The Fort Yuma Indian School and the Saint Thomas Yuma Indian Mission now occupy the site. It is one of the "associated sites" listed as Yuma Crossing and Associated Sites on the National Register of Historic Places in the Yuma Crossing National Heritage Area. In addition, it is registered as California Historical Landmark #806.
The New Mexico Territory, which included the areas which became the modern U.S. states of New Mexico and Arizona as well as the southern part of present-day Nevada, played a small but significant role in the Trans-Mississippi Theater of the American Civil War. Despite its remoteness from the major battlefields of the east and its existence on the still sparsely populated and largely undeveloped American frontier, both Confederate and Union governments claimed ownership over the territory, and several important battles and military operations took place in the region.
The 1st Regiment California Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War. It spent its entire term of service in the western United States.
La Paz was a short-lived early gold mining town along on the western border of current-day La Paz County, Arizona. The town grew quickly after gold was discovered nearby in 1862. La Paz, Spanish for peace, was chosen as the name in recognition of the feast day for Our Lady of Peace. Originally located in the New Mexico Territory, the town became part of the Arizona Territory when President Abraham Lincoln established the new territory in 1863. In 1983 the newly-formed County of La Paz adopted the name, long after the town had become a ghost town.
Prior to the adoption of its name for a U.S. state, Arizona was traditionally defined as the region south of the Gila River to the present-day Mexican border, and between the Colorado River and the Rio Grande. It encompasses present-day Southern Arizona and the New Mexico Bootheel plus adjacent parts of Southwestern New Mexico. This area was transferred from Mexico to the United States in the Gadsden Purchase of 1853. Mining and ranching were the primary occupations of traditional Arizona's inhabitants, though growing citrus fruits had long been occurring in Tucson.
Fort Mohave was originally named Camp Colorado when it was established on April 19, 1859 by Lieutenant Colonel William Hoffman during the Mohave War. It was located on the east bank of the Colorado River, at Beale's Crossing, near the head of the Mohave Valley in Mohave County, Arizona by the recommendation of Lieutenant Edward Fitzgerald Beale. After the end of the Indian Wars, the fort was transferred to the Bureau of Indian Affairs in 1890. In 1935 it was transferred to the Fort Mojave Indian Reservation; the fort is administered by the state of Arizona.
The Company A, Arizona Rangers was a cavalry formation of the Confederate States Army during the American Civil War.
District of Arizona was a subordinate district of the Department of New Mexico territory created on August 30, 1862 and transferred to the Department of the Pacific in March 1865.
Sylvester Mowry was an American politician, miner, and land speculator. He is best remembered as an early advocate for the establishment of the Arizona Territory. He was also a West Point graduate and officer of the United States Army who was later arrested as a traitor during the American Civil 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 Quechan were the primary opponent of the United States Army, though engagements were fought between the Americans and other native groups in the region.
Steamboats on the Colorado River operated from the river mouth at the Colorado River Delta on the Gulf of California in Mexico, up to the Virgin River on the Lower Colorado River Valley in the Southwestern United States from 1852 until 1909, when the construction of the Laguna Dam was completed. The shallow draft paddle steamers were found to be the most economical way to ship goods between the Pacific Ocean ports and settlements and mines along the lower river, putting in at landings in Sonora state, Baja California Territory, California state, Arizona Territory, New Mexico Territory, and Nevada state. They remained the primary means of transportation of freight until the advent of the more economical railroads began cutting away at their business from 1878 when the first line entered Arizona Territory.
General Jesup was a side-wheel paddle-steamer, named for General Thomas Jesup then Quartermaster General of the United States Army, and was the second steamboat launched on the Colorado River, in 1854.
Olive City, or Olivia, was a short-lived town, steamboat landing, and ferry crossing on the Colorado River in what was then Yuma County, Arizona Territory, from 1863 to 1866. It was located on the Arizona bank of the Colorado River, 1 mile above its rival Mineral City and 1/2 mile above the original site of Ehrenberg, Arizona, 3 miles southwest of the location of La Paz. The GNIS location of Olive City (historical) is indicated as being in La Paz County, Arizona, but its coordinates in the present-day now put it across the river just within Riverside County, California. Olive City was named after Olive Oatman who had been, with her sister, survivors of the massacre of her family and a captive of the Yavapai until purchased from them by the Mohave who they lived with for several years.
George A. Johnson & Company was a partnership between three men who pioneered navigation on the Colorado River. Benjamin M. Hartshorne, George Alonzo Johnson and Alfred H. Wilcox. The George A. Johnson & Company was formed in the fall of 1852, and was reorganized as the Colorado Steam Navigation Company in 1869.
United States 
Confederate States