On the Alert - Nationalist Chinese soldiers with their weapons ready, sit in a trench during an alert here Aug. 19. The Chinese Nationalists say they repulsed two separate invasion attempts by the Communists last night Aug. 24 in the off-shore Quemoy Islands. The U.S. Seventh Fleet in the Formosa Straits has been alerted and reportedly is in the vicinity of the Chinese mainland. August 25, 1948. (Photo by UPI Photo).