Korean War addition to Canadian Headstones

On Sunday walking to see the 10 am changing of the guard ceremony on Parliament Hill I noticed a small plaque near the corner of Lisgar and Elgin by City Hall. We have just marked the 65th anniversary of the signing of the armistice that ended the active fighting in the Korean War so it was a timely find as it contains more than 20 names of those from the National Capital Region who gave their lives their between 1950 and 1953.
The plaque only gives initials, I've added forenames found at the Canadian Virtual War Memorial.

R. V. ARNOTT  (Robert Victor)
D. W. BANTON (Douglas Wakelin)
T. H. COLBOURNE (Thomas Henry)
A. R. COLLINS (Arthur Roy)
S. F. COWAN (Stuart Franklin)
L. A. EMERSON (Lorne Ashley)
B. P.  J. FAIRFIELD (Bernard Paul Joseph)
A. L. GRAY (Alexander Louis)
C. A. HAYES (Curtis Archie)
U. J. LÉVESQUE (Urbain Joseph)
H. T. MACDONELL (Herbert Thomas)
J. P. MAISONNEUVE (Jean-Pierre)
D. P. MAURER (Derrick Peter)
K. D. O’BRIEN (Kenneth Dominic)
T. E. PERRY (Thomas Edward)
J. H. B. POIRIER (Joseph Herni Bernard)
W.L. PRESLEY (Wycliffe Lesley)
A. A. RÉGIMBALD (André Adélard)
B. G. D. RICE (Bernard George David)
J. E. H. SANSCARTIER (Joseph Emile Hector)
D. M. WELLINGTON (Daniel Melvin)

The image sent to Cliff Seibel who was quick off the mark in adding it to Canadian Headstones within a day.