2. Battle of Antietam (September 17, 1862): After the Battle of South Mountain, Union troops continued to advance towards Sharpsburg, Maryland, where they engaged Confederate forces in the Battle of Antietam. Frederick remained a crucial logistical hub, providing supplies to Union troops on the front lines.
3. Gettysburg Campaign (June-July 1863): Frederick was again chosen as a Union supply depot during the Gettysburg Campaign. General Joseph Hooker established headquarters in Frederick before the Battle of Gettysburg. The town served as a significant source of supplies and reinforcements for the Union army throughout the campaign.
4. Stoneman's Raid (April-May 1863): General George Stoneman's cavalry raid aimed to disrupt Confederate supply lines and communication in Virginia. Frederick served as a starting point for Stoneman's raid, and the Union cavalry troops passed through the town before venturing deep into Confederate territory.
5. Shenandoah Valley Campaigns (1862-1865): Frederick was located at the crossroads of several major roads and railroads, making it a strategic location for the Union army to launch campaigns in the Shenandoah Valley. The town served as a base for Union forces during various campaigns in the Valley, including the campaigns of 1862 under General Nathaniel P. Banks and General John Pope, as well as Sheridan's Shenandoah Valley campaign in 1864.