After the defeat at bull run to where did the union army retreat?

The defeat of Union forces at the First Battle of Bull Run caused the Union army to retreat back to Washington, D. C. The battle took lace in Virginia at the Manassas Junction. The defeat shocked the North and emboldened the South.

Explanation: The advent of the Civil War was an uncertain time for many Americans. Many thought the war would be short. Neither side was prepared for the protracted conflict it became.