the pressure on ward's brigade was eventually too great, and he was forced to call for a retreat. hood's division secured devil's den and the southern part of houck's ridge. the center of the fighting shifted to the northwest, to rose woods and the wheatfield, while five regiments under evander law assaulted little round top to the east. benning's men spent the next 22 hours on devil's den, firing across the valley of death on union troops massed on little round top.