With integration, African-Americans gradually began to lose their unique status within the Armed Forces. As a result, materials focusing on their status as minorities are often less abundant than those for pioneers such as the Buffalo Soldiers or the Tuskegee Airmen. However, issues of discrimination still arise in post-Korea materials. Other issues include opposition to the Vietnam War and the rise of African-Americans into the highest ranks of the Armed Forces, including General Colin Powell's role as Chairman of the Joint Chiefs during the George (Herbert Walker) Bush Administration. And in 2008, President Barack Obama became the first African-American to hold the highest rank in the Armed Forces, Commander-in-Chief, aka President of the United States.