John Barclay Fassett

SEO Title: He Led a Regiment Forward to Recapture a Lost Gun

John Barclay Fassett was born in Philadelphia, Pennsylvania. During the American Civil War, he entered Union service and became an officer in the 23rd Pennsylvania Infantry. His wartime career eventually brought him to Gettysburg, where an act of initiative and courage during the desperate fighting of July 2, 1863, earned him the Medal of Honor.

By the time of Gettysburg, Fassett held the rank of Captain. The 23rd Pennsylvania Infantry was serving with the Army of the Potomac as Union forces moved north to confront General Robert E. Lee’s Army of Northern Virginia during its invasion of Pennsylvania.

The two armies collided at Gettysburg beginning on July 1, 1863. After the first day’s fighting forced Union troops back through the town, the Federal army established a defensive position on the high ground south of Gettysburg. The following day brought some of the fiercest fighting of the entire battle as Confederate forces attacked several parts of the Union line.

On July 2, Fassett was serving as an aide during the battle. His responsibilities placed him in a position where rapid communication and personal initiative could influence the movement of troops during a rapidly changing engagement.

At one point in the fighting, a Union artillery position came under severe pressure, and one of its guns was taken by the enemy.

Fassett responded without waiting passively for the situation to resolve itself.

He voluntarily led a regiment toward the threatened battery, helping bring infantry support into the fight. The movement carried the soldiers directly into a contested part of the battlefield where Confederate troops had already gained ground.

Under Fassett’s leadership, the Union force reached the position and helped recover the captured artillery gun.

The action demonstrated the value of decisive leadership during the confusion of a major battle. Fassett was not simply carrying a message between commanders. He took an active role in directing troops toward a threatened point and helped restore a position that had temporarily fallen into enemy hands.

Gettysburg on July 2 was a battlefield of constant movement and uncertainty. Fighting raged across areas including the Union left, the approaches to Cemetery Ridge, and other portions of the defensive line. Units were moved repeatedly to meet developing threats, and commanders often had to make decisions with limited information while casualties mounted around them.

In that environment, an officer willing to act quickly could have an immediate effect.

Fassett’s conduct stood out because he voluntarily assumed responsibility during a dangerous situation. He helped bring a regiment to the aid of the artillery and participated in the recovery of the lost gun.

The battle continued into the following day. On July 3, Confederate forces launched their great assault against the Union center on Cemetery Ridge. The attack failed, and Lee’s army eventually withdrew from Gettysburg.

The Union victory became one of the defining events of the Civil War. It ended the Confederate invasion of Pennsylvania and inflicted losses that the Army of Northern Virginia could not easily replace.

For Fassett, however, the defining moment came during the previous day’s fighting.

His actions on July 2, 1863, were eventually recognized with the Medal of Honor. He received the decoration on December 29, 1894, more than three decades after Gettysburg.

The long interval between the action and the award was not unusual among Civil War recipients. Many acts of battlefield gallantry were formally recognized years later as military records were reviewed and recommendations were processed.

At the time of the action for which he received the Medal of Honor, Fassett was a Captain. He later advanced further and ultimately reached the verified rank of Major, the highest rank associated with his military career.

That distinction is important. His Medal of Honor recognized what he accomplished as a Captain during the Battle of Gettysburg, while his later advancement reflected his continued service and military progression beyond that single episode.

Fassett’s story also illustrates how battlefield leadership could extend beyond the formal duties of an officer’s immediate assignment. Serving as an aide required communication, awareness, and mobility, but Gettysburg demanded more. Faced with a threatened artillery position, Fassett chose to act directly.

He took responsibility for moving troops toward danger rather than away from it.

The recovery of the gun represented more than the return of a piece of artillery. Guns were critical battlefield assets, and losing one to the enemy could weaken a defensive position while strengthening the opposing force. Recapturing such a weapon required soldiers to re-enter ground already contested by enemy troops.

Fassett helped make that possible.

He survived the Civil War and lived for several decades afterward. As the nineteenth century gave way to the twentieth, Gettysburg became one of the most commemorated battlefields in the United States, and the surviving veterans of the conflict became increasingly important witnesses to the nation’s Civil War history.

John Barclay Fassett died on January 18, 1905, in Pasadena, California. He was buried in Woodlawn Cemetery in the Bronx, New York.

His military legacy remains tied to July 2, 1863. In the midst of the violent and confused fighting at Gettysburg, Captain Fassett voluntarily led troops toward a threatened Union battery and helped recover an artillery gun that had fallen into enemy hands.

More than thirty years later, the Medal of Honor permanently recorded that act of courage and initiative, preserving his place among the officers whose leadership helped hold the Union position during one of the most important battles of the Civil War.