Possible Clues:

• High ground obtains early advantage in battle
• Side unfortunate after hard battle
• Move slowly down where battle was fought
• First Civil War battle
• Battle's hot - I shall need sharpened blade at the front
• Battle of the English Civil War
• I held leg, injured in battle
• Eng. Civil War battle
• Advantage to have mount in battle
• Man, say, mounted then fell in battle