Task: Text Categorization
Input (English): This battle was preceded by the largest cavalry engagement in U.S. history, the Battle of Brandy Station, and it was also preceded by the resignation of General Joseph Hooker. One force that saw action at this battle was the 20th Maine, which was led by Joshua Chamberlain and fought at Little Round Top. An attack during this battle failed to take Cemetery Ridge and was known as Pickett's Charge. For 10 points, name this 1863 Civil War battle that inspired a namesake ""Address"" by Lincoln.
Output (English): History