In the afterword to his new graphic novel The Harlem Hellfighters, writer Max Brooks cites two of the most common objections he encountered while shopping his screenplay about a regiment of black soldiers who fought for the United States in World War I: First, most Americans weren’t terribly interested in the first World War, a subject they knew almost nothing about; and, second, most Americans weren’t terribly interested in stories about African-American soldiers fighting in that war they weren’t interested in.
It likely won’t surprise anyone who reads The Harlem Hellfighters that it began as a film script — for a made-for-TV movie for TNT, actually, although the cable channel ultimately passed — as the cliches from virtually any war movie ever made are present, but that afterword does include an impressive example of why Brooks felt so passionate about the project. He recounts a discussion with an African-American professor who argued that one of the ways those in power have oppressed black people is by wiping them out of history books. When Brooks mentioned the Hellfighters, the professor responded that there were no black men fighting in World War I.
This, then, was history obscure even by the standards of academics who care passionately about the subject.