FWD, the Futurian War Digest (FWD), affectionately called FIDO, was a fanzine published by J. Michael Rosenblum during World War II from October, 1940 to March, 1945. It was pretty much indistinguishable from an APA because, although he did not have a set membership list, Rosenblum included other small fanzines when he mailed Fido. For more info, see https://fancyclopedia.org/Futurian_War_Digest