This summer, the Supreme Court overturned the legality of race-based affirmative action at higher education institutions everywhere, with one glaring exception: military service academies. Members of the conservative-leaning court like Justice Clarence Thomas and Justice John Roberts have long been staunch opponents of affirmative action initiatives, but in the case of service academies, the majority opinion cited that diversity in the officer ranks of the military was a "battlefield issue."Today, we bring you an episode from our colleagues at Code Switch. Co-hosts Gene Demby and Lori Lizarraga take us back to the Vietnam War to explain where that argument came from. And we'll hear from Mary Tobin, a Black woman, combat veteran, and West Point graduate, about why the Court's decision felt like such a blow to her.This episode was produced with help from Courtney Stein and engineering support from James Willetts.Unlock access to this and other bonus content by supporting The NPR Politics Podcast+. Sign up via Apple Podcasts or at plus.npr.org. Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.