Related Clues:
- Peace opposite
- Sherman's hell
- Big fight
- Multi-billion dollar industry
- Ten years' or hundred years' event
- Gettysburg, for one
- Battle of nations
- Sphere of Mars
- "This means ---!"
- Serious hostilities
- In song, it's good for absolutely nothing
- Military engagement
- 'That mad game the world so loves to play,' to Jonathan Swift
- Civil --
- Sun Tzu's 'The Art of ___'