Warpath can describe someone very angry or determined, not just actual war preparation.

Metaphorical Use

The word conveys intense emotion, suggesting confrontation is imminent.

Strong Emotion

'Warpath' is informal and can sound too aggressive in polite or formal situations.

Informal Context

 this is it boys let's make it happen it's the first day of the season and I could not be more excited nothing stopping us this year and we are going on a warpath we're going to mean and

New and Improved PIPE...

 driver ants are the stuff of legend it is said that they kill everything that crosses their path it is said that no animal is safe when they're on the warpath