Log Category of Documents:
Message, dated 28 Feb ((year unspecified)), signed by Thanh ((see Item 2)), sent to E21, orders the addressee to: (1) Assist the 23rd Co in overrunning an unspecified position to create chain reactions; (2) make maximum efforts to shoot down an unspecified number of aircraft in the northeastern area of Doi Tuong ((Hill)); and ((3)) the Regt HQ was to remain with D4 ((possibly the 4th Bn, 21st Main Force Regt)) and the heavy weapons units and maintain contact with D5 and D6 ((possibly the 5th and 6th Bns, 21st Main Force Regt)) for immediate actions. E21 must successfully conduct an attack prior to the beginning of a climaxing phase of activity to be conducted in late Mar.