Fort Lyon aka Fort Wise existed on the Colorado eastern plains until 1867, when a new fort was erected near the present-day town of Las Animas. This is the article on the state. ... 1867 was a common year starting on Tuesday (see link for calendar). ...

The fort was known as Fort Wise until 1862, it had been named after a southern Confederate state's governor, then during the Civil War was renamed for General Nathaniel Lyon, killed in Missouri in 1861. 1862 was a common year starting on Wednesday (see link for calendar). ... For other meanings of confederate and confederacy, see confederacy (disambiguation) National Motto Deo Vindice (Latin: Under God our Vindicator) Official language English de facto nationwide Various European and Native American languages regionally Capital Montgomery, Alabama February 4, 1861–May 29, 1861 Richmond, Virginia May 29, 1861–April 9, 1865 Largest... A civil war is a war in which the competing parties are segments of the same country or empire. ... Missouri, named after the Missouri Siouan Indian tribe meaning canoe, is a Southern state in the United States with Jefferson City as its capital. ...

Old Fort Lyon's main claim to fame is that Colonel John Chivington used it as the staging post in 1864 for the Sand Creek Massacre, an attack on Indian tribes that were moving to a new reservation in Oklahoma. The resulting congressional investigation resulted in a national wave of public indignation at the slaughter of elderly men, women, and children, and the dismemberment of the corpses and public display of body parts. Colonel John Chivington (1821-1894), born in Lebanon, Ohio, was the hero of Glorietta Pass and the man responsible for the Sand Creek Massacre. ... The Sand Creek Massacre was an infamous incident in the Indian Wars of the United States that occurred on November 29, 1864 when Colorado Militia troops in the Colorado Territory massacred an undefended village of Cheyenne and Arapaho encamped on the territorys eastern plains. ... Oklahoma is a South Central state of the United States (with strong Southern, Western, and Midwestern influences) and its U.S. postal abbreviation is OK; others abbreviate the states name Okla. ...

A flood of the Arkansas River in 1866 drove the US Army to establish the new location near Las Animas, completed in 1867, and angry indians then burned the remains of the old fort. Lower Arkansas River The Arkansas River is a tributary of the Mississippi which flows east and southeast through Colorado, Kansas, Oklahoma and the state of Arkansas. ... 1866 is a common year starting on Monday. ...