Terry Pratchett 
Jingo [EPUB ebook] 
Stage Adaptation

Discworld goes to war!Somewhere in the Circle Sea between Ankh-Morpork and Al-Khali, the Lost Kingdom of Leshp has emerged after hundreds of years beneath the waves. And so with no ships, no army and no money, Ankh-Morpork goes to war against the Klatchian army claiming the rock as their own.Undaunted by the prospect of being tortured to death by vastly superior numbers of enemy troops, a small band of intrepid men and a very thick troll set out under the command of Sir Samuel Vimes of the City Watch.If they can survive long enough, maybe they can arrest an entire army for breach of the peace…