at the time. Lincoln asked Ulric for an overview of his experience in the military. After Ulric's summary of his experience, Stanton offered him a position in the U.S. Army as captain and aide-de-camp to General Franz Sigel. He fought at the Second Battle of Bull Run, the Battle of Fredericksburg, the Battle of Chancellorsville, the Battle of Brandy Station, and the Battle of Gettysburg. During the Battle of Fredericksburg, he and sixty Union cavalry captured the city and held it for three hours. They were eventually forced to retreat, but were able to take thirty-one confederate prisoners. On March 1, 1863, he joined the staff of General Joseph Hooker and was retained on the staff of General George Meade when he took over the Army of the Potomac. He was wounded in the foot on July 6, 1863 during the Battle of Gettysburg in a skirmish in Hagerstown, Maryland and had his leg amputated below the knee. For these efforts, Dahlgren received a Commission as colonel on July 24, 1863. Kilpatrick-Dahlgren raid After recovering from his injury, Dahlgren met Brig. Gen. Hugh Judson Kilpatrick on February 23, 1864 at a party and was invited to participate in an operation to attack Richmond, Virginia; rescue Union prisoners from Belle Isle and damage Confederate infrastructure. The operation is also known as the Battle of Walkerton. On February 28, Kilpatrick and Dahlgren left from Stevensburg, Virginia. Kilpatrick was to attack Richmond from the North with 3,500 men and Dahlgren from the South with 500 men. Snow, sleet and rain from an unexpected winter storm slowed the attack. Dahlgren's forces were led to a ford on the James River near Dover Mills by an African-American guide, Martin Robinson. The troops were not able to cross due to high water from recent rains. Dahlgren believed he had been tricked by the guide and had him hanged in retaliation. Dahlgren redirected his troops to attack Richmond from the East. They heard the sound of battle and rushed to support Kilpatrick but ran directly into a Confederate Home Guard force which halted their advance. Dahlgren retreated East in an attempt to connect with Kilpatrick's force. The Union troops were continually harassed by Confederate forces during the retreat and became separated. On the night of March 3rd, Dahlgren and a portion of his troops were ambushed near King and Queen Court House by 150 men in the