How did the union respond to important defeats in the east in 1862?

In 1862, the Union faced significant defeats in the East, most notably at the Second Battle of Bull Run and the Battle of Fredericksburg. In response, Union leadership recognized the need for strategic changes, leading to the appointment of General Joseph Hooker to command the Army of the Potomac. Additionally, the Union intensified recruitment efforts and focused on bolstering morale among troops and civilians, emphasizing the importance of perseverance and the ultimate goal of preserving the Union.