At Manzhouli, near the border of China, Siberia, and Mongolia, the Chinese launch their charge into the woods. There is the roar of fire — and from the other side, the eruption of the SAS/D’s Heckler & Koch 9mm parabellums firing at over eight hundred rounds a minute, the crash of grenades, and the terrible whistling of flechettes. Suddenly the sky is aglow with phospherous flares like shooting...