G. A. Henty 
Won by the Sword 

Sequel to ‚The Lord of the North‘. Historical novel set in Germany during the 30 Years‘ War. The Preface begins: ‚In my preface to the Lion of the North I expressed a hope that I might some day be able to continue the history of the Thirty Years‘ War. The deaths of Gustavus and his great rival Wallenstein and the crushing defeat of the Swedes and their allies at the battle of Nordlingen brought the first period of that war to a close. Hostilities, indeed, never ceased, but the Swedes no longer played the leading part on the Protestant side that they had hitherto occupied. Oxenstiern, the great chancellor of Sweden, saw that the only hope of eventual success lay in engaging France in the struggle, and he and the Duke of Weimar went to Paris and pointed out to Richelieu that unless France intervened, Austria must become the master of all Germany, and as the ally of Spain would have it in her power to completely dominate France.‘ According to Wikipedia: ‚George Alfred Henty (8 December 1832 – 16 November 1902), referred to as G. A. Henty, was a prolific English novelist, special correspondent, and Imperialist born in Trumpington, Cambridgeshire, England. He is best known for his historical adventure stories that were popular in the late 19th century. His works include Out on the Pampas (1871), The Young Buglers (1880), With Clive in India (1884) and Wulf the Saxon (1895).‘