Jingo: Discworld, Book 21

A weathercock has risen from the sea of Discworld, and suddenly you can tell which way the wind is blowing.

A new land has surfaced, and so have old feuds. And as two armies march, Commander Vimes of Ankh-Morpork City Watch has got just a few hours to deal with a crime so big that there's no law against it. It's called "war".

He's facing unpleasant foes that are out to get him...and that's just the people on his side.

The world's cleverest inventor and its most devious politician are on their way to the battlefield with a little package that's guaranteed to stop a battle...

Discworld goes to war...

This is the 21st volume in the Discworld series.