Warfare in Medieval Poland as well. Even their horses were smaller and lighter. Different armament was used by infantry, which marched onto the battlefield in close order formations of shield-bearers covering heavy cavalry detachments, or mobile units of bowmen and cross-bowmen, and sometimes irregulars, who used different weapons specialized to fight both foot soldiers and cavalry: (war hammer, war scythe, glaive, fork, flail, morgenstern, guisarme, halberd, bardiche). Defensive armaments of the infantry consisted of shields (wooden, round or oval, through light bucklers, up to heavy pavises), quilted jackets and gambesons or brigandines. A characteristic helmet of the foot soldier was the kettle hat -
AC power plugs and sockets: British and related types travel adaptors may also include USB charging ports. Fused plugs and sockets of various proprietary and non-interchangeable types are found in older public buildings in the UK, where they are used to feed AC electric wall clocks. They are smaller than conventional sockets, commonly being made to fit BESA junction boxes, and are often of very low profile. Early types were available fused in both poles, later types fused in the line only and provided an earth pin. Most are equipped with a retaining screw or clip to prevent accidental disconnection. The prevalence of battery powered quartz controlled wall clocks