Did the United states ever fight for native Americans?

The United States has not fought for Native Americans in the sense of actively supporting their rights and sovereignty in military engagements. Instead, the U.S. government often engaged in conflicts against Native American tribes during westward expansion, leading to significant loss of land, culture, and lives among Indigenous peoples. There have been instances of treaties and legal battles aimed at protecting Native American rights, but these were often not followed through or respected, highlighting a complex and often adversarial relationship.