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.

Fifth Battalion; Sixth Battalion; First Battalion; Second Battalion; Third Battalion; Eleventh Battalion; Twelfth Battalion; Thirteenth Battalion; Sixteenth Battalion; Seventeenth Battalion; Eighteenth Battalion; Nineteenth Battalion; Twentieth Battalion; Twenty-first Battalion; Twenty-second Battalion; Twenty-third Battalion; First Fifth Battalion; Second Fifth Battalion; First Sixth Battalion; Second Sixth Battalion; First Seventh Battalion; Second Seventh Battalion; First Eighth Battalion; Second Eighth Battalion; Ninth Battalion; First Ninth Battalion ; Second Ninth Battalion; First Tenth Battalion; Fifty-first (G) Battalion