OR A Military Journal OF The WARS in Germany, AND The WARS in England; From the Year 1632, to the Year 1648. Written Threescore Years ago by an English Gentleman, who served first in the Army of Gustavus Adolphus, the glorious King of Sweden, till his Death; and after that, in the Royal Army of King Charles the First, from the Beginning of the Rebellion, to the End of that War.
Published in 1720 this novel - in full online - tells the tale of a 17th century soldier from the Thirty Years War on to the Civil War. Another version here
I am not sure what the source for this book is - I remember reading somewhere that it was based on interviews conducted by Defoe - does anyone know more about this book?