U.S. Vol. Civil War; killed 23 March 1862, at the battle of Winchester, Va. 2d Lt. Andrew H. Tippin, Bvt. 1st Lt. Contreras and Churubusco; Col. U.S. Vol. Civil War. 2nd Lt. Thomas Welsh, Brig. Gen. U.S. Vol. Civil War; died 16 August 1863, of malaria contracted at Vicksburg. 2d Lt. Junins B. Wheeler. Capt. U.S. Army. Civil War. Old Eleventh Infantry This was the regiment known as the Eleventh Infantry Regiment during the American Civil War until 1869. The official U.S. Army lineage of three present-day U.S. Infantry regiments trace back to this regiment. Civil War The fourth 11th Infantry was organized on 4 May 1861 by direction of the President. On 14 May 1861, President Abraham Lincoln issued an executive order, directing an increase of the regimental organizations of the Regular Army. The 11th Infantry was the first, numerically, of the nine infantry regiments, of three battalions of eight companies each, were of the increase authorized. In G. O. No. 33, A. G. O., series of 1861, in contrast to the original ten regular regiments of infantry, which were organized on the traditional ten-company line. The 11th Infantry was organized at Fort Independence, Boston Harbor, Massachusetts, as regimental headquarters, and which remained the 11th's headquarters during the War. Erasmus D. Keyes was served as colonel of the 11th U.S. Infantry from 14 May 1861 to 6 May 1864. William S. Ketchum served as colonel of the 11th U.S. Infantry 6 May 1864 to 15 March 1869. After six companies had been organized and assigned to the 1st Battalion, 11th Infantry Regiment, it was ordered to Perryville, Maryland, 10 October 1861, and duty there until March 1862. Ordered to Washington, D.C. Attached to Sykes' Regular Infantry, Reserve Brigade, Army Potomac, to May 1862. The 11th then campaigned September 1863 to November 1864 as part of the 5th Army Corps, Army of the Potomac and 8th Army Corps, Middle Department, to January 1865. The 11th took part in the following: Peninsula Campaign, Siege of Yorktown, Battle of Mechanicsville, Gaines' Mill, Turkey Bridge 30 June, Battle of Malvern Hill Malvern Hill, At Harrison's Landing until 16 August. Movement to Fortress Monroe, thence to Centerville 16–28 August. Pope's Northern Virginia Campaign, Battle of Groveton 29 August, Second Battle of Bull Run, Maryland Campaign, Battle of Antietam, Shepherdstown Ford 19–20 September, Battle of Fredericksburg, "Mud March", Chancellorsville Campaign 27 April – 6 May,