Lee 's difficulty in replacing Change_of_leadership his lost Earnings_and_losses men as well as his inability to prevent Preventing_or_letting the Union withdrawal Escaping effectively have led to Causation his great victory being regarded as a Pyrrhic one .

Hunley '' became Becoming renowned as the first submarine to successfully sink Motion_directional an enemy vessel in combat , and was the direct progenitor of what would eventually become Becoming international submarine warfare , although the victory was Pyrrhic and short-lived , since the submarine did not survive Preserving the attack Attack and was lost Earnings_and_losses with all eight Confederate crewmen .

After being defeated by the Roman Republic in the Pyrrhic War in 275 BC , Pyrrhus ( 297–272 BC ) decided Deciding to turn Change his attention to Greece .