In doing research for other books, journalist Phil Keith, with his co-author Tom Clavin, kept coming across footnote references to a relatively obscure but legendary war hero, an American born in 1895 whose father had been the son of a former slave. Their interest was piqued, and what followed was further research. And a new collaboration, “All Blood Runs Red.” When still a child, Eugene Bullard ran away from his harsh rural roots, and though he never went beyond the second grade, he did go on to become as the records have it “the first Negro combat pilot in World War I,” a daredevil ace who was made a member of the French Foreign Legion. But there was more: Bullard was also a champion boxer, a jazz drummer and Parisian night club owner, where the busboy once was Langston Hughes. Bullard also became a French Resistance spy in World II and finally, back in the states, after that war, a civil rights advocate, getting beaten up in the Peekskill Race Riots in 1949 over the appearance of