The Grattan massacre of August 17, 1854 occurred east of Fort Laramie, Nebraska Territory, USA (in present-day Goshen County, Wyoming). 29 US soldiers were killed by Brulé Sioux. It was an early and significant event in the plains Indian Wars. August 17 is the 229th day of the year (230th in leap years) in the Gregorian Calendar. ... 1854 was a common year starting on Sunday (see link for calendar). ... Grounds of Fort Laramie Fort Laramie, located in present-day Goshen County, Wyoming in the United States, was a significant 19th century trading post and later a military outpost of the United States Army. ... Nebraska Territory was a historic, organized territory of the United States from May 30, 1854 until March 1, 1867 when Nebraska became the 37th U.S. state. ... Goshen County is a county located in the state of Wyoming. ... State nickname: Equality State Official languages English Capital Cheyenne Largest city Cheyenne Governor Dave Freudenthal (D) Senators Craig Thomas (R) Mike Enzi (R) Area  - Total  - % water Ranked 10th 253,554 km² 0. ... Part of indian genealogy tree (more informations at http://www. ... The Sioux (also Dakota) are a Native American tribe. ... An 1899 chromolithograph of U.S. cavalry pursuing American Indians, artist unknown. ...

In the late summer of 1854, about 4,000 Brulé and Oglala Sioux were camped near Fort Laramie in accordance with the terms of an earlier peace treaty. On August 17 a cow belonging to a Mormon traveling on the nearby Oregon Trail wandered into the Sioux camp and was killed. 1854 was a common year starting on Sunday (see link for calendar). ... The Lakota (IPA: ) (also Lakhota, Teton, Titonwon) are a Native American tribe. ... Grounds of Fort Laramie Fort Laramie, located in present-day Goshen County, Wyoming in the United States, was a significant 19th century trading post and later a military outpost of the United States Army. ... August 17 is the 229th day of the year (230th in leap years) in the Gregorian Calendar. ... Binomial name Bos taurus Linnaeus, 1758 Cattle (called cows in vernacular usage) are domesticated ungulates, a member of the subfamily Bovinae of the family Bovidae. ... The Salt Lake City temple of The Church of Jesus Christ of Latter-day Saints is the largest attraction in the citys Temple Square. ... The route of the Oregon Trail is shown in red in the western United States Map from The Ox Team or the Old Oregon Trail 1852-1906 by Ezra Meeker. ...

Brevet 2nd Lt. John L. Grattan, a recent graduate of West Point, was ordered to bring in the guilty Sioux cow killer. Grattan was an inexperienced, quick to anger young man who was looking for a fight with the Indians to prove himself. A commander at Laramie later recalled "There is no doubt that Lt. Grattan left this post with a desire to have a fight with the Indians, and that he had determined to take the man at all hazards." In the US military, brevet referred to a warrant authorizing a commissioned officer to hold a higher rank temporarily, but usually without receiving the pay of that higher rank. ... USMA redirects here, but this abbreviation can also mean U.S. Metric Association. ...

In front of the Brulé chief Conquering Bear, Grattan insisted on taking the guilty party in to custody. Conquering Bear understood the nature of the situation and tried to negotiate, but Grattan continued to escalate tensions. When Conquering Bear stood up, he was shot in the back and killed. This started a volley of fire from both sides; Grattan and all of his men were killed. This event was called the "Grattan Massacre" by the U.S. media as part of a campaign to stir up anti-Indian sentiment. Conquering Bear Chief Conquering Bear was a Brule Sioux leader who signed the Fort Laramie Treaty in 1851. ...

News of the massacre reached the War Department and plans were put in to motion for retaliation. William S. Harney was recalled from Paris and sent to Fort Kearny, where he was put in command of elements of his own 2nd Mounted Dragoons {later 2d Armored Cavalry Regiment and units from the 6th US Infantry and 10th US Infantry and the 4th US Artillery Regiments. They set out on August 24, 1855 to find and exact payment on the Sioux. The United States Department of War was the military department of the United States governments executive branch from 1789 until 1949, when it became part of the United States Department of Defense. ... William Selby Harney (22 August 1800 - 9 May 1889) was a cavalry officer in the U.S. Army during the Mexican-American War and the Indian Wars. ... Fort Kearny was a historic outpost of the United States Army founded in 1848 in the western U.S. during the middle and late 19th century. ... Coat of Arms of the United States Army 2d Cavalry Regiment Shoulder Sleeve Insignia of the United States Army 2d Cavalry Regiment Distinctive Unit Insignia of the United States Army 2d Cavalry Regiment The 2d Armored Cavalry Regiment (2d ACR) —established by President Andrew Jackson on May 23, 1836 as... August 24 is the 236th day of the year in the Gregorian Calendar (237th in leap years), with 129 days remaining. ... 1855 was a common year starting on Monday (see link for calendar). ...

This then lead to the Battle of Ash Hollow (also known as the Battle of Bluewater Creek) on September 3, 1855, in which US soldiers killed a number of Brulé Sioux near Ash Hollow on Bluewater Creek. The Grattan Massacre occurred in what is today Nebraska, USA on August 17, 1854 near Fort Laramie, in which a number of US soldiers were killed by Brule Sioux. ... September 3 is the 246th day of the year (247th in leap years). ... 1855 was a common year starting on Monday (see link for calendar). ...