The Sword and the Prison — Alan Savage

Germany, 1940. Badly wounded and a prisoner of war after the fall of France, Major Hector Brand is nursed back to health in the Von Pattens' family home rather than a prison hospital. A family as famous in German military history as are the Brands in British, they treat him as an honoured guest, but military honour demands that he escape, just as soon as he can move.

In the mountains south of Munich, with Switzerland only a few miles away, freedom is tantalisingly near, yet Hector knows he needs help, which can only come from the Pattens themselves -- in particular their two daughters. So, with ruthless determination he attempts to seduce both girls to enlist their aid....

But the plan goes horribly wrong: while Hector escapes, the Pattens are accused of treason by the Nazis. Desperate to save a family as loyal as his own, Hector returns to Europe with the D-Day advances to find the beautiful Agnes von Patten, a girl who risked everything for his safety... at the expense of her own.