battle of gettysburg how many troops
10 Facts: Gettysburg Fact #7: The Battle of Gettysburg is by far the costliest battle of the Civil War but not necessarily the largest. While each of the three days of the Battle of Gettysburg rank in the top 15 bloodiest battles of the Civil Warâthe 160,000 troops present at Gettysburg are eclipsed by the more than 185,000 at Fredericksburg.