judy,heres the info i found.
gunner
walter.william green
625476
H.A.C
his majesty has graceously approved the award of the military medal to the following,for bravery in the field
625538.corporal p.m keen,from hampstead
625525.bombadier a.s chalis,from forest gate
625476.gunner w.w green,from coleshill
625461.gunner h.hammond,from addlethorpe
his military medal was gazetted on 14-5-19
his service medals are in WO372/8
it looks like the whole gun tam were decorated,if walter was from the area described,then hes your man,bernard