Such a combined movement would have given Wright ample reinforcements, and in the mounted volunteers the very arm he most needed; for infantry could never reach the Indians on those plains in summer unless the latter chose to fight. And for the second time he was given the opportunity, by availing himself of the coöperation of the volunteers, to inflict a severe punishment upon the enemy. Unhappily Wool’s orders tied his hands, and Wright himself was imbued with Wool’s delusion that the Indians of the upper country—the great hostile tribes that had plotted and brought on the war fresh from treacherously signing the treaties at Walla Walla, had murdered the miners and agent Bolon, and had plundered Fort Walla Walla, and laid themselves in wait to cut off Governor Stevens and his party—were innocent and peaceably disposed Indians, who had been forced to war by the aggressions of the whites.

Upon Casey’s rejection or evasion of the joint operation he proposed, Governor Stevens determined to push his mounted men across the mountains, and throw upon that officer the burden of protecting the settlements upon the Sound against hostile incursions. Accordingly he offered to turn over to him his posts on the Puyallup, and on Connell’s and South prairies, and the colonel received and occupied them, for which he was censured and rebuked by Wool as soon as the latter was informed of it. The governor was convinced that the war could be brought to a close only by subduing the hostile tribes of the upper country; that until this was done the Sound country was liable to their raids and stirring up of fresh outbreaks among the Sound Indians; and that every day’s delay in striking them was helping Kam-i-ah-kan and his emissaries in winning over the Spokanes, Cœur d’Alenes, and disaffected Nez Perces to their side. He also deemed it necessary to send supplies and Indian goods to Craig and Lawyer, and strengthen their hands in keeping the Nez Perces loyal, now left more exposed by the withdrawal of the Oregon volunteers from the Walla Walla valley. He proceeded, therefore, to carry out his plans, cherished from the beginning, of striking a blow in the upper country.

On June 12 Lieutenant-Colonel Shaw marched from Camp Montgomery with one hundred and seventy-five mounted men of the Central and Southern battalions, under their respective majors, Blankenship and Maxon, comprising Captain Henness’s Company C, Maxon’s Washington Mounted Rifles, Company D, under Lieutenant Powell, Captain Miller’s Company J, and a pack-train of twenty-seven packers and one hundred and seven pack animals, under Captain C.H. Armstrong, the regimental quartermaster and commissary. On the 20th he reached the Wenass branch of the Yakima, with the loss of only one animal, finding the road good for a mountain road. Colonel Wright was still parleying with the Yakimas, trying to patch up a peace, and not only with them, but also with Leschi, Kitsap, Stahi, Nelson, and Qui-e-muth, the hostile chiefs who had fled from the Sound country, and would vouchsafe no information or suggestion to the volunteer colonel, except the statement that the regular troops were amply sufficient for the Yakima. Shaw therefore continued his march, crossed the Columbia at old Fort Walla Walla, and reached and made camp on Mill Creek, in the valley, on the 9th of July.

Having seen the necessary arrangements made, and orders given for Shaw’s march, the governor hastened in person to the Dalles, arriving there June 12, where he had already assembled Captains Goff’s and Richards’s companies, in anticipation of operating in the upper country.

He had previously, on April 27, inquired of Colonel Wright if he intended to occupy the Walla Walla valley, and if, in case it were not occupied, and the Oregon volunteers there were withdrawn, he could furnish an escort of one company to guard the train to the Nez Perce country. To this Wright replied that it was no part of his plan of campaign to occupy the Walla Walla country, “as we are assured that the Indians in that district are peacefully inclined,” and that the matter of an escort was referred to General Wool, which, of course, was equivalent to refusal. The governor, on receiving this reply, at once wrote Wright:—

“My information in regard to the Indians in the Walla Walla, and on the Snake River, is that they are determined to prosecute the war. This was the declaration made by the prominent chiefs of the Cuyuses to the express of Mr. McDonald some weeks since. This is the opinion of my agent in the Nez Perce country and of the Nez Perce chiefs, and it would seem to be indicated by the recent attack by the Indians on the volunteers at the Umatilla.

“I have therefore thought it my duty to communicate these views, and I will suggest that you receive with great caution any information of their peaceful intention, to the end that you may not be thrown off your guard.”

Thus Wright was fixed in the opinion that these Indians were peaceably disposed, all evidence to the contrary notwithstanding. He ignored the information and views given him by Governor Stevens, who, as Superintendent of Indian Affairs, was especially charged with the care and management of them; the information furnished by the Hudson Bay Company’s officer at Colville; the opinions of the Nez Perce chiefs and agent Craig; and even a recent attack actually made upon a post of Oregon volunteers on the Umatilla.

The governor now notified Wright of Shaw’s march and orders to coöperate with him:—

“His orders are to coöperate with you in removing the seat of war from the base of the mountains to the interior, and for reasons affecting the close of the war on the Sound obvious to all persons.