The Tulan phalanx ground ahead.

One of the sergeants grinned wanly at Barry Watson as his men moved forward with the preciseness of the famed Rockettes of another era. "It's working," he said proudly.

Barry Watson snorted, "Don't give me credit. It belongs to a man named Philip of Macedon, a long ways away in both space and time."

Cogswell called, "Our right flank cavalry is falling back. Joe wants to know if you can send any support."

Watson's face went expressionless. "No," he said flatly. "It's got to hold. Tell Joe and the Khan it's got to hold. Suggest they throw in those cavalry units they're not sure of. The ones that threatened mutiny last week."

Joe Chessman stood on the knoll flanked by the Khan's ranking officers and the balance of the Earthmen. Natt Roberts was on the radio. He turned to the others and worriedly repeated the message.

Joe Chessman looked out over the valley. The thirty-thousand-man phalanx was pressing back the enemy infantry with the precision of a machine. He looked up the hillside at the point where the enemy cavalry was turning the right flank. Given cavalry behind the Tulan line and the battle was lost.

"O.K., boys," Chessman growled sourly, "we're in the clutch now. Hawkins!"

"Yeah," the pilot said.

"See what you can do. Use what bombs you have including the napalm. Fly as low as you can in the way of scaring their horses." He added sourly, "Avoiding scaring ours, if you can."