 Infantry of the line often wore shakos (later supplanted by the 'home service helmet'), as did others; though Scots and Irish regiments tended to have their own distinctive full-dress headwear.General officers and staff officers usually wore plumed cocked hats in full dress, as did regimental staff officers and those of some support services.In hotter climates, for all of the above, a white pith helmet was often substituted.