C'est La Guerre is a French-language nominal phrase meaning “that’s war” or more idiomatically “that’s war,” often used to acknowledge conflict or the harsh realities of combat. In English contexts it’s treated as a foreign phrase, typically italicized or quoted, and can function as a thematic label or quoted declaration in discussions of history, politics, or literature. It carries a formal, historical register and formal pronunciation cues for non-native speakers.
Full pronunciation guide