sentences:  New buildings were built from 1856 to 1858 under the direction of the commander Captain Thomas Jordan at a cost of nearly $500,000.Beginning in April 1858, the log fort was torn down and several new buildings, including a commander's house, barracks, and stables, were constructed under the command of Colonel George Wright, in command of the 9th Infantry.During the Yakima Wars Fort Dalles served as operational headquarters for the Army.