Answer:
1A, 2B, 3A, 4D, 5 "As still more Confederates joined in the battle, they forced the Union soldiers back to the edge of the bluff. Some fell or jumped to their deaths while many stumbled down the deep slope." The eighth paragraph is evidence too.
Step-by-step explanation:
The first clue that shows a "terrible defeat" is the heading that reads, "A terrible mistake." Another way to tell is to understand the text is painting an awful way to die for many Union soldiers caught off guard by the many Confederate soldiers.