The Welsh National Book of Remembrance for the First World War contains the names of 35,000 servicemen and women, as well as members of Welsh Regiments, who lost their lives in the First World War. These individuals are listed according to regiment and battalion alongside the names of those who might well have died alongside them.

Second Battalion; Third Battalion; First Fifth Battalion; Second Fifth Battalion; First Seventh Battalion; Ninth Battalion; Tenth Battalion; Eleventh Battalion; Twelfth Battalion; Fifteenth Battalion; Fifteenth Seventeenth Battalion; Eighteenth Battalion; Twenty-first Battalion