Disque was reinstated on September 29, 1917, as a lieutenant colonel, promoted to colonel on November 6, and placed in charge of the Spruce Production Division of the Aviation Section, U.S. Signal Corps, headquartered in Portland, Oregon.
The Four L was organized after opposition to the Spruce Production Division by the IWW's Lumber Workers Industrial Union, which had declared an industry-wide strike in the summer of 1917, latching onto the momentum of the many spontaneous strikes that were occurring [REF].