Mike Michaelis's two-battalion 27th Infantry Wolfhounds, in position northwest of Hwanggan, encountered the NKPA 2nd Division's probing attacks on the night of July 23rd.
The Wolfhounds, supported by Gus Terry's superior 8th FAB, bit back with unusual, indeed even unprecedented, ferocity. Michaelis remembered his tactics:
"One thing I learned about the North Koreans: If things did not go exactly as they had planned, they had to stop everything and call back the company and battalion commanders, set up a new pattern, then come out again. So, if you could destroy their initial onslaught, you had them. I came up with what I called the `inverted snake procedure.' I would put one company astride the road leading into our positions, then take the high ground as far back as I could stretch, closing off the tail end. When the NKPA came down the road and bumped into the block, they'd start their usual probing on the flanks, forgetting [6-for the moment] the middle. I'd pull the middle back through and build up the flanks in the high ground. When finally you got down to the desperation point - in danger of losing your equipment and a lot of men - you broke contact and just hauled ass. That became our radio signal for withdrawal: How Able! How Able!"[6-52]