What shots changed the course of battle and the world the most in your opinion?
I am going with Timothy Murphy's sniper shot that killed the British General Frasier at the Battle of Saratoga. General Frasier's death changed the course of the battle which resulted in General Burgounnye's entire Army being surrendered to the Americans. This battle led to the French openly joining the side of the Americans, and the destruction of political opinion at home.