There were his two invasions of Vietnam, and his two invasions of Burma, both of which resulted in Pyrrhic victories thanks to their sheer, insane cost.
Managing to get to within a few kilometres of the Moon's surface may sound like something of a pyrrhic victory, but it shows that most of the company's engineering works.
The Battle of Thermopylae would come to be known as a pyrrhic victory- or a victory where the cost is so high, that it can hardly be considered a victory at all.