Mae Llyfr Cofio Cenedlaethol Cymru o'r Rhyfel Byd Cyntaf yn cofnodi enwau 35,000 o filwyr , yn ddynion a merched o Gymru ynghyd ag aelodau o gatrodau Cymreig, a gollodd eu bywydau yn y Rhyfel Byd Cyntaf. Rhestrwyd yr unigolion yma fesul catrawd a bataliwn ochr yn ochr ag enwau'r rhai a allai'n hawdd fod wedi marw gyda nhw.

Second (City of London) Battalion (Royal Fusiliers); Fourth (City of London) Battalion (Royal Fusiliers); Twenty-ninth (City of London) Battalion (Royal Fusiliers); The Honourable Artillery Company (Infantry); Sixth (City of London) Battalion (Rifles); Ninth (County of London) Battalion (Queen Victoria's Rifles); Eleventh (County of London) Battalion (Finsbury Rifles); Twelfth (County of London) Battalion (The Rangers); Thirteenth (City of London) Battalion (Princess Louise's Kensington Battalion); Fifteenth (City of London) Battalion (P.W.O. Civil Service Rifles); Sixteenth (City of London) Battalion (Queen's Westminster Rifles); Fifth (City of London) Battalion (London Rifle Brigade); Eighth (City of London) Battalion (Post Office Rifles); Tenth (County of London) Battalion (Hackney); Seventeenth (City of London) Battalion (Poplar & Stepney Rifles); Twenty-eighth (City of London) Battalion (Artist' Rifles); Thirty-third (City of London) Battalion; Seventh (City of London) Battalion; Nineteenth (City of London) Battalion (St. Pancras); Twentieth (City of London) Battalion (Blackheath & Woolwich); Twenty-third (County of London) Battalion; Twenty-second (City of London) Battalion (The Queen's); Twenty-fourth (City of London) Battalion (The Queen's); Fourteenth (City of London) Battalion (The London Scottish); Eighteenth (City of London) Battalion (London Irish Rifles)