The volunteers on the left (from 1916) and right (from 1969) each hold a rifle, and the blanket man in the middle also appears to be holding a staff of some sort. Get in touch if you know exactly what it is, and if you can identify the Twinbrook street (Gardenmore Road?) where the mural was.
Click image to enlarge
Copyright © 1987 Peter Moloney
M00510
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Peter Moloney Collection 