THE LATEST BOOK I HAVE READ

Gustavus Adolphus: a Historical Poem. 
By Frederic Swinborne.
1884.

Against the backdrop of my favourite strategist's many encounters with the Catholic enemy ranks (from landing to Lützen, through Leipzig and the Lech), Swinborn narrates the love story of Rhineland damsel Hilde and Swedish lieutenant Erik. Is the young officer condemned to die on the battlefield where his liege lord will also meet an untimely fate? I won't tell you readers, so you will have to find out by reading this detailed and thorough epic, that gets inside the minds of Gustavus Adolphus, Tilly, and Wallenstein while giving accounts of the everyday lives of officers, privates, and camp followers in those troubled times.
Here's the link (you can download the book on .pdf):
http://archive.org/details/gustavusadolphus00swinrich