US Army Center
U.s. Army Center of Military History: Chapter Xiii: The Chinese Take a Hand
This resource provides information on the involvement of Chinese troops during the Korean War.
BBC
Bbc: The Cold War: Korean War: China's Intervention
Chronicles the events beginning at General MacArthur's replacement by General Ridgway at the onset of China entering the Korean War. Highlights the Chinese air offense over the skies of South and North Korea.