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Declassified per Executive Order 13526, Section 3.3 NND Project Number: NND 63316. By: NWD Date: 2011

a. The Chinese Communists maintain, on a routine basis, approximately 250 jet fighters in South China. These and other aircraft, including jet light bombers, could be rapidly deployed to bases in North Vietnam and South China to conduct air operations in support of the Communist objective. In the event of a ground invasion of the magnitude suggested above, it is well within the CHICOM's capability to neutralize the air bases and port facilities in Thailand and South Vietnam in an attempt to deny their use by SEATO forces. Such an operation could precede or accompany the invasion of ground forces.

1. If North Vietnamese forces overtly intervened, the SEATO force would have to be increased from the equivalent of approximately one division at the initiation of the SEATO Plan to twelve divisions, seven Regimental Combat Teams and five battalions. In addition, the SEATO force would have air and naval superiority. Such a force is considered adequate to defeat the North Vietnamese forces.

2. US force contribution to the enlarged SEATO force required to combat such DRV action would include two Army divisions, one Marine division/wing team and five USAF tactical squadrons deployed in Thailand and South Vietnam. The US forces would be increased from 14,000 to a total of approximately 129,000, not including Navy forces. One division for this force must come from the continental United States. This could require the call up of one division plus other appropriate forces to maintain the US strategic reserve. Rh