Answer:
Option C and D
They did not have the same fighting spirit.
They had suffered tremendous casualties
Explanation:
The army was not having the same spirit with which the fight was started. The was became weary and the soldiers got exhausted by the conflict or war. There was no progress made, despite the efforts. After Lee attacked the Grant, the army in the Battle of the Wilderness faces heavy casualties on both the sides but yet Grant did not withdraw his army despite the greatest setback. He ordered the army to repeatedly attack segments of the Confederate as a result of which there was heavy losses for both sides
Hence, option C and D are correct