The correct evaluation of the impact of guerrilla warfare on a battle of the American Revolution is:
Guerilla tactics helped pave the way for a patriot victory in the Battle of Yorktown.
This statement accurately reflects the role of guerrilla tactics and overall strategy in the broader context of the Revolutionary War, as those tactics contributed to the weakening of British forces and helped set the stage for the decisive victory at Yorktown, which was a pivotal moment in the war.