Cap Badges of the First World War: The London Regiment. Representative badges of this unique, all-Territorial, multi-battalion regiment. (L-R) 10th (Hackney); 20th (Blackheath & Woolwich); 15th (Civil Service Rifles) #WW1 #FWW

Cap Badges of the First World War: The Royal Welsh Fusiliers & the Welsh Reiment. Post-war, they would return to the ancient ‘Welch’ spelling. (L-R) Welsh Regiment; Royal Welsh Fusiliers; 7th (Cyclist) Bn, Welsh Regiment. #WW1 #FWW

Cap Badges of the First World War: Some multi-part badges, where one metal was laid on another, were simplified to brass (‘gilding metal’). This wasn’t to save on nickel - it was to reduce manufacturing steps. Here, Devonshire & East Yorkshire regiments #WW1 #FWW

Cap Badges of the First World War: Bimetal infantry regiments with fascinating histories #WW1 #FWW

Cap Badges of the First World War: The Royal Naval Division. These sailors fought as soldiers, originally wearing caps with appropriate tallies, before adopting service dress caps. RND battalions were named after admirals. These badges are much reproduced #WW1 #FWW