of 25 April the 23rd Infantry was to drop back to positions just below the eastern tip of the Hwacheon Reservoir, a move that would place the regiment on the exact trace of the Kansas Line; beginning on the 25th General Clark L. Ruffner was to make daily physical contact with the Marine Division's right flank located near the village of Yuch’on-ni at the western tip of the reservoir. The latter step was a hedge against the possibility that enemy forces might penetrate the right of the Marine line and make a flanking or enveloping move against X Corps through the otherwise unoccupied ground below the reservoir. To screen this ground and maintain contact with the Marines, Ruffner organized Task Force Zebra under the commander of the division's 72nd Tank Battalion, Lt. Col. Elbridge L. Brubaker. Included in the task force were a platoon of tanks from the 72nd, the 2nd Reconnaissance Company, the division's attached Netherlands and French Battalions, and, later, the 1st Ranger Company. General Almond on the morning of the 25th ordered an afternoon attack by the ROK 5th Division to retake Inje and the high ground immediately above the town as a first step in regaining the Kansas Line. As worked out by Almond with General Yu, the leftmost units of ROK III Corps were to join the advance. Yu's attack-for reasons not clear-did not materialize, and although the ROK 5th Division recaptured Inje, enemy pressure forced the unit to return to its original positions below the town. General Almond planned to attack again on the 26th, but, as he would soon learn, any attempt to retake the Kansas Line was for the time being out of the question as a result of a second failing performance by the ROK 6th Division at Kapyong. PVA attacks the Kansas Line (23–24 April) PVA following the withdrawal of the US 24th and 25th Infantry Divisions finally reestablished contact with small, groping attacks near midnight on the 23rd. Almost at the same hour, far harder attacks struck the ROK 1st Division and British 29th Brigade along the Imjin, particularly their neighboring interior units, the 12th ROK Regiment and the British brigade's isolated Gloster battalion at Solma-ri. The midnight exploratory probes in the eastern half of the Corps' sector developed into strong but not overpowering daytime assaults by three divisions against the 24th Infantry on the right of the 25th