Other Rank's Field Service cap cover marked to Private Joseph Rook, Coldstream Guards, Crimean War

Cap covers had first been issued to the Army of the East in the summer of 1854 for use with the Albert shako. By 1855, the Guards regiments (or at least the Coldstreams) had a cover intended for their unique field service caps: the inverted pleat across the crown allowed the cover to mould itself to the shape of the cap underneath, while the peak, made in two pieces, creates a pocket into which could fit one of the field service cap's down-turned flaps.