Was fluent in French, Tahitian, and Chinese as well as English.
A careful review of the Official Military Personnel Folder shows Chapman was authorized the Korean Service Medal with One Star and the United Nations Service Medal". These awards were given to soldiers who served in the wartime theater; a star was for participation in a campaign.
He is survived by his three children: Benjamin Franklin Chapman III, Grant Chapman, Elyse Maree Raljevich, and by his sister, Moea Baty.
Interviewed in Tom Weaver's book "Attack of the Monster Movie Makers" (McFarland & Co., 1994).