Outside, the troopers were leading into line, and a trumpeter was holding Fredericks’s impatient charger. Fredericks had only a moment. He seized his pistol and field-glasses, threw an affectionate arm across Swinnerton’s slouching shoulders, and hugged him fiercely. There was not a word that he could say.

LOPEZ’S raid across the border never occurred, but the false report of it accomplished its intended purpose. The town of Agua Caliente was stripped of its combatant garrison, and two hours after Fredericks had trotted away a lonely vaquero appeared at the crest of the hill back of Angeles, a Mexican picket fired, and was instantly answered by a sheet-like volley from the hidden rebel battle-line. It flashed through the wind-swept streets of Angeles, it knocked great sections from the adobe buildings, it ricochetted from the flagstones of the street, it shattered windows by the score; but most significant of all, it crossed the border-line, and every bullet found a resting-place in American soil. This was a contingency that no one had foreseen.

An American at the custom-house whirled, threw up his hands, and fell in an anguished heap. The halyards of the headquarters flag snapped, and the flag dropped loosely from its pulley to the ground. A bullet crashed through Swinnerton’s window and thudded in the wall behind him. He scarcely looked up. He was sitting before the photograph in his room, and talking to it, as was his custom.

“No, I don’t blame you. No one could, and least of all I. It was a fine thing I offered you. People may laugh at a fool, but to live with one! Tired—I’m tired of it myself.” After a full minute’s silence, he added, “Dog-tired—pitifully tired.”

He rose wearily and walked toward the open window, whence he could see the long, supple slope of the tawny hillside, with the Mexican federal trenches cutting it diagonally on one flank, and the white smoke-puffs of the attackers on the other.

The mayor of Caliente came storming into the outer office, roaring at the abashed headquarters orderly:

“Where’s the commanding officer? Where is he, I say? What are you soldiers good for, anyway?”

Swinnerton quietly opened the door, to the immense relief of the trooper.

“The colonel’s gone to Huachuca,” he said, “and Captain Fredericks has taken the troop to Quebrantos under competent orders. Is there anything I can do for you?”