In the Revolution, a British deserter could become a traitor to the Crown by joining the Continental Army and there become a hero. Chains Across the River tells the enthralling tale of one such soldier, Captain Thomas Machin, a brilliant engineer of flawed character born, educated and trained in England. He enlisted in the British Foot and was posted to Boston, where he saw action at Breed's Hill before deserting to join the Continentals. Observing...