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.

First Battalion; Second Battalion; Third Battalion; Fifth Battalion; Seventh Battalion; Eighth Battalion; Ninth Battalion; Tenth Battalion; Eleventh Battalion; Twelfth Battalion; Thirteenth Battalion; Fourteenth Battalion; Sixteenth Battalion; Second Fifth London Regiment; First Eighth London Regiment; First Tenth London Regiment; Second Tenth London Regiment; First Twenty-eighth Regiment; First Twenty-eighth Regiment; Twenty-foruth (Home Counties) Battalion; Twenty-fifth Garrison Battalion (Reserve)