Late that year, Lanark rode with a patrol through southern Missouri, where fortune brought him and his comrades face to face with Quantrill's guerrillas, the same that had plundered Lanark. The lieutenant in charge of the Federal cavalry set a most hysterical example for flight, and died of six Southern bullets placed accurately between his shoulder blades; but Lanark, as ranking non-commissioned officer, rallied the others, succeeded in withdrawing them in order before the superior force. As he rode last of the retreat, he had the fierce pleasure of engaging and sabering an over-zealous guerrilla, who had caught up with him. The patrol rejoined its regiment with only two lost, the colonel was pleased to voice congratulations and Sergeant Lanark became Lieutenant Lanark, vice the slain officer. In April of 1862, General Curtis, recently the victor in the desperately fought battle of Pea Ridge, showed trust and understanding when he gave Lieutenant Lanark a scouting party of twenty picked riders, with orders to seek yet another encounter with the marauding Quantrill. Few Union officers wanted anything to do with Quantrill, but Lanark, remembering his harsh treatment at those avaricious hands, yearned to kill the guerrilla chieftain with his own proper sword. On the afternoon of April fifth, beneath a sun bright but none too warm, the scouting patrol rode down a trail at the bottom of a great, trough-like valley just south of the Missouri-Arkansas border. Two pairs of men, those with the surest-footed mounts, acted as flanking parties high on the opposite slopes, and a watchful corporal by the name of Googan walked his horse well in advance of the main body. The others rode two and two, with Lanark at the head and Sergeant Jager, heavy-set and morosely keen of eye, at the rear. A photograph survives of Lieutenant Kane Lanark as he appeared that very spring--his breadth of shoulder and slimness of waist accentuated by the snug blue cavalry jacket that terminated at his sword-belt, his ruddy, beak-nosed face shaded by a wide black hat with a gold cord. He wore a mustache, trim but not gay, and his long chin alone of all his command went smooth-shaven. To these details be it added that he rode his bay gelding easily, with a light, sure hand on the reins, and that he had the air of one who knew his present business. The valley opened at length upon a wide level platter of land among high, pine-tufted hills. The flat expanse was no more than half timbered, though clever enemies might advance unseen across it if they exercised caution and foresight enough to slip from one belt or clump of trees to the next. Almost at the center of the level, a good five miles from where Lanark now halted his command stood a single great chimney or finger of rock, its lean tip more than twice the height of the tallest tree within view. To this geologic curiosity the eyes of Lieutenant Lanark snapped at once.