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Declassified per Executive Order 13526, Section 3.3 NND Project Number: NND 63316. By: NWD Date: 2011 TOP SECRET – Sensitive :(3) "After appropriate build-up, to launch a counter offensive, including a major amphibious assault on North Vietnam, to inflict a decisive defeat on enemy military forces and at the same time liberate occupied territory."

Plan 5 provided U.S. troops to release the Royal Laotion forces for offensive operations and to assist them "to regain areas lost." The U.S. would also provide "additional military and logistic support." This was a fully developed and approved plan, for which "the Field Force Commander's plan is complete." Plan 6 provided for the defense of the protocol states against attack by forces of the DRV. The general concept was:


 * (1) "To hold the enemy as far forward as possible and to provide defense in depth, securing main ports of entry and bases for build-up and deployment of forces for counter-offensive."


 * (2) "To destroy the enemy's forces, LOC's and capacity to wage war through an intensive interdiction program conducted by SEATO air and naval forces supported by such air and naval forces under national command as are made available."


 * (3) "While maintaining the defense, forces for the counteroffensive phase will be assembled and built up. When appropriate, a general offensive to include a major amphibious assault against North Vietnam will be mounted to inflict a decisive defeat on the enemy military forces and to liberate the territory overrun by the DRV."

U.S. ground force commitment to the plans was a corps consisting of three infantry divisions plus a Marine Expeditionary Force of one division. Air support was a tactical bomber squadron, two tactical fighter squadrons, and a Marine air wing. Anticipated support of the plans by other SEATO countries is evident in available ground force troop lists for plans 4 and 6: Rh