A wall structure adapted to be fabricated in sections or modules and comprises an upper member, a lower member, a plurality of studs interconnected between the upper and lower members with respective studs including openings therein, and at least one diagonal brace member extending through the openings within the studs and interconnected between opposed corners of the wall structure. Because the internal brace extends generally centrally through the plane of the wall, the wall structure is designed to carry loads concentrically from the point of applied loads to a foundation or other termination point.