Per chevron enhanced Or and Vert, issuing from a powder horn fesswise, large part to dexter and resting on a quill, shaft point to dexter, with the sling entwining both are three chevronels braced with sinister legs beveled twice of the first; a bordure quarterly Buff and Gules.
VIS PER SUSTENTATIONEM (Strength Through Support).
Scarlet and buff are the colors for Support. Gold is emblematic of excellence and high ideals. The powder horn and feather indicate the occupational equipment of Captain Merriweather Lewis, who established the first campsite in the Fort Lewis area, the original unit location, and in whose honor the Fort was named. The chevrons, symbolic of support, represent the mountainous region where the unit was located. The green area and the gold color refer to the flag of Washington, the "Evergreen State." The simulated lightning flashes, suggested by the three flashes on the device of the U.S. Strike Command, refer to the historic scope of the unit's logistic support.
The coat of arms was approved on 28 September 2007.