The blue side cap preceded the scarlet field service cap introduced in the late 1890s. This folding undress cap is described in the 1883 Dress Regulations as a ‘Forage Cap for Active Service and Peace Manœvres — Blue cloth folding cap, 5 inches high with blue side flaps, 4 inches deep, to turn down when required. Gold French braid welts on cap and flaps, and at front and back seams. Regimental badge on left side.’
