The In-Sect - article - history - web - Historical Campaign Atlases

I recently stumbled over the website of the ‘History Department at the United States Military Academy’. They sport a huge archive of campaign atlases to aid their cadets in their course ‘History of the Military Art’. Over thousand maps encompassing not only America’s wars but global conflicts as well, are publicly displayed there.
Look at the Waterloo map above, and if you are a historian, tell me: Why is Napoleon grouchy again?
Historical Campaign Atlases