06/18/2026
The Opening Assaults were a series of battles that took place from June 15-18, 1864. Each day was an attempt by the U.S. Army to push into the City of Petersburg. Petersburg became an objective for the U.S. Army due to its logistical importance to Richmond. Four railroads, a canal, and at least four major wagon roads ran into Petersburg, making it an important industrial center in 1860. Petersburg was encircled by a ring of defensive works called the Dimmock Line. These works were commanded by General P.G.T. Beauregard.
For four days, U.S. soldiers from the Army of the Potomac fought to push through Petersburg’s defenses. During these battles, soldiers displayed signs of severe strain and exhaustion. Many of these soldiers had been locked in a state of constant movement and combat since early May. General Grant ordered an end to offensive operations on the evening of June 18. He further ordered them to “use the spade for their protection” and begin siege operations. It was from this point where the nine-months-long siege of Petersburg begins.
Image: “The tired soldier – a sketch from life at Petersburg during the siege/Edwin Forbes.” June 19 1864 (Library of Congress)