Hers To Command by Margaret Moore

Sir Henry was a knight-errant, capable of impressive prowess on the battlefield...and in bed. Finding two sisters—one stunningly beautiful, the other steadfast and determined—waiting patiently in his chamber, he entertained their proposition: a generous sum in exchange for commanding their men-at-arms in a battle to save their lands.Seduced by the beauty of Gisele, yet irresistibly drawn to the intelligence of Mathilde, a proud woman as complex as her secrets, Henry accepts their offer. But as invaders close in, it is Mathilde who must dare to trust her deepest desires...and the man willing to fight for all he is worth to prove his honor.