“Sir, I am but my son’s ambassador,” said the physician. “He would have delivered the despatch himself, but was attacked and grievously wounded as he rode from Ledbury.”

Cromwell glanced at the blood-stained letter, which told its own tale.

“I remember Captain Harford well,” he said. “He did excellent work at Newbury, and again, two months ago, when we were in Wiltshire.”

“’Twas only through his great wish to serve you that I have consented to leave him in a risky hiding-place, and in grave peril of death from his wounds,” said the physician.

“Poor lad!” said Cromwell, his stern face softened to such tenderness as amazed Dr. Harford. “The moral courage of his nature is a thousandfold more needed in England than mere animal bravery. There is one of my troopers, Passey by name, who was his fellow prisoner in Oxford Castle, and he hath told me how no skilled physician could have shown a more tender care for the fever-stricken inmates.”

“Should he recover, he more than ever longs to serve the sick and wounded,” said Dr. Harford.

“Then in God’s name bid him do it,” cried Cromwell. “I urged him at Newbury to wait for clearer guidance, bidding him beware of men and to look up to the Lord, letting Him be free to speak and command in his heart, and without consulting flesh and blood to do valiantly for God and His people. And here, doubtless, in this pain he hath passed through, his guidance hath come.”

“Should I find him living on my return, I will repeat your words to him,” said Dr. Harford.

“God grant that he may be spared to you, sir,” said Cromwell. “I know too well what the loss of a first-born son means to the heart of a father. Look you, an’ it should chance that Parliament still desires to retain my services in the Army, let your son act as one of the mates to the surgeon of my troop, thus would he gain knowledge whilst still serving the Cause.”

Dr. Harford welcomed the suggestion, and anxious to lose no time on his return journey, took leave of the great leader, understanding better than he had done before what it was that gave this man his extraordinary power. He had the insight to perceive what the greatest of modern historians has called Cromwell’s “all-embracing hospitality of soul,” and to understand that this, combined with a rare sagacity in seeing what was practically possible and a matchless faith and courage, marked him out as the true steersman in those troubled times.