I found the Cabral Family Tree, trees.ancestry.com/tree/32278275/person/18218162460 . Most larger libraries offer free access to Ancestry.com. I thought you'd like to get in touch with the owner of the family tree.
Unfortunately this Matthew Cabral has passed away.
Service Info: PFC US Army Korea
Born: 21 Sept. 1929
Service State Date: 4 June 1951
Death Date: 17 June 1967
Buried: 22 June 1967, National Memorial Cemetery of The Pacific, 2177 Puowaina Drive Honolulu, HI 96813, Section T, Site 453.
A copy of his obituary might provide more information. There is an obituary volunteer at freepages.genealogy.rootsweb.ancestry.com/~obitl/volhi.html