John Corcoran

He Turned Captured Guns Against the Enemy

John Corcoran was born on June 24, 1842, in Pawtucket, Rhode Island. During the American Civil War he entered United States Army service and became an artilleryman with Battery G, 1st Rhode Island Light Artillery. By the closing weeks of the conflict he was serving as a private with a veteran organization that had spent years supporting Union armies in some of the war's most demanding campaigns.

Battery G had been organized in Providence in December 1861 and developed a long combat record with the Army of the Potomac and other Union commands. Its service included major operations from the Virginia Peninsula to Antietam, Fredericksburg and Gettysburg, followed later by the Overland and Shenandoah Valley campaigns. By December 1864 the battery had returned to Virginia and was serving with the VI Corps during the final phase of the siege of Petersburg.

Petersburg had become one of the most strategically important points in the eastern theater. Its railroads and roads supplied Richmond and General Robert E. Lee's Army of Northern Virginia. For months, Union forces under Lieutenant General Ulysses S. Grant had extended their lines around the city, forcing the Confederates to defend an increasingly strained network of fortifications.

The situation changed dramatically at the beginning of April 1865. A major Union victory at Five Forks on April 1 threatened the South Side Railroad and weakened the Confederate position. Grant responded by ordering a general assault against the Petersburg defenses for the following morning. Before daylight on April 2, Union formations prepared to attack lines that Confederate troops had defended for many months.

Private Corcoran was selected for an especially dangerous assignment. He became one of a detachment of twenty picked artillerymen who voluntarily accompanied an infantry assaulting party. Rather than remaining behind the main infantry advance in the usual artillery role, these men moved forward with the assault troops into the Confederate defenses.

The mission demanded both artillery skill and willingness to face the dangers of a direct infantry assault. If Confederate guns were captured during the breakthrough, the selected artillerymen were expected to put those weapons into immediate use. Corcoran and the other volunteers therefore advanced knowing they would have to reach enemy artillery positions while the battle was still underway.

On April 2, 1865, the Union assault broke through portions of the Confederate defenses at Petersburg. Corcoran's detachment moved with the attacking infantry as enemy positions and artillery pieces fell into Federal hands. Once guns were captured, Corcoran and his fellow artillerymen turned them around and fired them against the Confederate forces that had previously operated them.

It was a remarkable reversal carried out in the midst of an active assault. Instead of waiting for Union artillery to be brought forward, the detachment immediately transformed captured Confederate weapons into assets for the attacking force. Corcoran's official Medal of Honor citation specifically recognized his voluntary participation among the twenty selected artillerymen and their use of the captured guns against the enemy.

The breakthrough at Petersburg had consequences far beyond the immediate battlefield. Union forces had finally ruptured the defensive system that had protected the city. That night, Lee ordered the evacuation of Petersburg and Richmond. Federal troops entered Petersburg, and Richmond fell soon afterward. The Army of Northern Virginia retreated westward with Grant's forces in pursuit.

Battery G continued with the operations that followed the fall of Petersburg. The campaign moved rapidly through Virginia as Union forces pursued Lee's retreating army. Only one week after Corcoran's Medal of Honor action, Lee surrendered the Army of Northern Virginia at Appomattox Court House on April 9, 1865, bringing the principal fighting in Virginia to an end.

Corcoran survived the war, but formal recognition of his actions at Petersburg came more than two decades later. On November 2, 1887, he was presented with the Medal of Honor for his conduct on April 2, 1865. The award preserved the specific circumstances of his service: a private artilleryman voluntarily joining a selected detachment, advancing with an infantry assault, and helping turn captured enemy guns against Confederate troops during the final breakthrough at Petersburg.

Unlike military decorations based on years of service or senior command, Corcoran's Medal of Honor recognized a particular battlefield decision. He and the other selected artillerymen accepted a role that deliberately placed them at the front of the assault so their specialized skills could be used immediately if enemy artillery was captured. Their success helped convert the weapons of a collapsing defensive line into firepower for the advancing Union troops.

Corcoran lived for more than thirty years after receiving the Medal of Honor. He died on June 19, 1919, only five days before what would have been his seventy-seventh birthday. He was buried at Oak Grove Cemetery in his hometown of Pawtucket, Rhode Island.

John Corcoran's military legacy is centered on the final breakthrough at Petersburg. Serving as a private in Battery G, 1st Rhode Island Light Artillery, he volunteered to leave the traditional position of an artilleryman and advance beside attacking infantry. When Confederate guns were captured, he helped turn those weapons against their former owners. That act on April 2, 1865, during one of the decisive final assaults of the Civil War, earned him the Medal of Honor and preserved his place in American military history.