Robert Kirkwood Jr., born in 1756, grew up near Newark, Delaware, and studied at Newark Academy before the Revolution drew him into military service. Commissioned a first lieutenant in Colonel John Haslet's Delaware Regiment in January 1776, he soon became part of one of the smallest state's most respected Continental formations. Promotion to captain placed him in command of a company he would lead through an exceptional span of campaigning.

Kirkwood and the Delaware troops fought in the New York campaign, where the army endured defeat, retreat, and severe losses. They later served at Brandywine and Germantown during the defense of Philadelphia. Delaware's blue-clad Continentals earned a reputation for discipline, but that reputation came at high cost: sickness, expiring enlistments, battle casualties, and supply shortages repeatedly reduced the regiment's strength. Kirkwood's continued service provided valuable continuity.

In 1780 the Delaware companies went south with the Maryland division. At Camden, the veteran Continentals resisted after militia on the American left collapsed, then escaped the disaster with heavy losses. Kirkwood helped rebuild the surviving Delaware contingent and led it in the campaigns of 1781. At Cowpens, Guilford Courthouse, Hobkirk's Hill, and Eutaw Springs, his small command repeatedly fought at critical points in Nathanael Greene's effort to exhaust British power.

Kirkwood reportedly participated in dozens of engagements during the war, a record that made him a symbol of sustained service. Yet he remained a captain for much of the conflict because Delaware's diminished establishment offered limited opportunities for promotion. The experience highlights how rank depended not only on merit but also on state quotas, regimental organization, and vacancies. His leadership was measured in the survival and effectiveness of a small veteran company.

After returning to Delaware in 1782, Kirkwood married Sarah England. Following her death, he moved to land granted in the Northwest Territory. Conflict there grew from United States expansion into Native homelands that Indigenous nations continued to defend. Kirkwood reentered the army and was killed on November 4, 1791, during the disastrous American defeat known as St. Clair's Defeat. His death links Revolutionary veterans to a contested new phase of national expansion.

The Delaware marker honors a local officer whose career ranged across nearly the entire war. His story demonstrates the disproportionate contribution of the Delaware Line, the importance of experienced junior officers, and the human cost of keeping Continental units together. It also resists a tidy ending at Yorktown: Kirkwood's postwar migration and death show how the republic rewarded veterans with western land while carrying warfare into Native country. His legacy joins endurance, public memory, and national expansion.