Recent infighting within the Chiricahua Apache Nation has raised a fundamental question: Who can legitimately identify themselves as Chiricahua Apache? For the Oklahoma-based Fort Sill Apache Tribe, the answer is straightforward: Its membership is composed of the descendants of the Warm Springs band of Chiricahua who surrendered with Geronimo to the U.S. government in 1886. Of those Chiricahua, about half survived being relocated by the government as prisoners of war …