Then May brought the Battle of the Yalu.

First there were only meagre newspaper reports—all that Boone saw before commencement—and later when the filtration of time brought the fuller discussions in the magazines, and the world had discovered General Kuroki, he was in the hills where magazines rarely came.

Upon the wall of General Prince's law office hung a map of the Manchurian terrain, and each day that devotee of military affairs took it down, and, with black ink and red ink, marked and remarked its surface.

On one occasion, when Colonel Wallifarro found him so employed, the two leaned over, with their heads close, in study of the situation.

"This Kuroki seems to be a man of mystery, General," began Wallifarro. "And it has set me to speculating. The correspondents hint that he's not a native Japanese. They tell us that he towers in physical as well as mental stature above his colleagues."

"I can guess your thought, Tom," smiled General Prince. "And the same idea occurred to me. You are thinking of the two Japanese agents who came to the hills—and of McCalloway's sudden departure on a secret journey. But it's only a romantic assumption. I followed the Chinese-Japanese War with a close fidelity of detail—and Kuroki, though less conspicuous than nowadays, was even then prominent."

Tom Wallifarro bit the end from a cigar and lighted it.

"It is none the less to be assumed that McCalloway is over there," he observed. "Emperors don't send personal messengers half way round the world to call unimportant men to the colours."

"My own guess is this, Tom," admitted the cavalryman. "McCalloway is on Kuroki's staff. Presumably he learned all he knew under Dinwiddie—and this campaign shows the earmarks of a similar scheme of generalship. Kuropatkin sought to delay the issue of combat, until over the restricted artery of the Siberian Railway he could augment his numbers and assume the offensive with a superior force."

"And at the Yalu, Kuroki struck and forced the fight."