Wool bunting pennant flag. White field with blue equilateral triangle in center of flag. Each corner forms a red triangle; the edges of the triangles that face the center of the flag are convex. Unbleached cotton hoist. Machine-stitching using red, white, blue, and off-white cotton threads. Flag panels have flat-felled seams. Hand-sewn repair on the fly done using an overcast stitch. The inscription on the hoist reads "4th Brg. 3rd Div. 4th Army Corps."