Mae hefyd yn ganmlwyddiant Corfflu Cynorthwyol Byddin y Merched; pan ganiatawyd menywod i ymuno â'r Lluoedd Arfog am y tro cyntaf, traddodiad sy'n parhau heddiw.
It is also the centenary of the Women’s Army Auxiliary Corps; when for the first time women were enrolled in the Armed Forces, a tradition that continues today.