Many Ontario cenotaphs used initials instead of given names. An excellent site with full names and details is the Commonwealth War Graves Commission
contact John Allan if you are willing to transcribe a cenotaph or other war memorial for OGSPI
MCMILLAN
McMILLAN w@ca.on.nipissing_district.north_bay 1950-1953 memorial
MacMILLAN
W.
R. served
M... Names Mc... Names McM... Names Welcome Home
McMILLAN w@ca.on.peel.toronto_township.meadowvale_cemetery 1950-1956 memorial
MacMILLAN
Murdoch
Ryan
Canadian Korean War Memorial by Korean War Veterans' Association
OGS Halton-Peel Branch publication 32A pages 22,23
(booklet contains 6 columns of additional info on each of 516 names)
M... Names Mc... Names McM... Names Welcome Home
MCMILLAN - All Categories in OGSPI