I also love history. Combining these two passions makes sense. With the revolution in digital mapping, incredible historical events are coming alive like never before.
Napoleon's Invasion of Russia: 1812
Napoleon decided to invade Russia in 1812. He made it to Moscow, stayed a month, then decided to leave. The Russian army employed a scorched earth policy so that the invaders couldn't survive on local supplies. Then the vaunted Russian winter kicked in. When he started out in late June, Napoleon had ~ 375,000 men. By the time he left Russian soil in mid December, he had less than 5,000. This is a modern day adaptation of Minard's famous graph. The thickness of the line is exactly 1/10,000 of the approximate size of Napoleon's Grande Armee.