Commanded by General Henry Atkinson, the U.S. forces tracked the British Band. Militia under Colonel Henry Dodge caught up with the British Band on July 21 and defeated them at the Battle of Wisconsin Heights. Black Hawk's band was weakened by hunger, death, and desertion, and many native survivors retreated towards the Mississippi. On August 2, U.S. soldiers attacked the remnants of the British Band at the Battle of Bad Axe, killing many and capturing most who remained alive. Black Hawk and other leaders escaped, but later surrendered and were imprisoned for a year.