_Part III._ While negotiations continue, X Corps will: (1) Demonstrate its willingness to reach an agreement by reducing operations to those which are essential to insure maintenance of present positions. Counterattacks to regain key terrain lost to enemy assault are authorized, but other clearly offensive actions will be taken only by direction of this Headquarters; patrolling only to that line beyond which contact has been repeatedly established; limiting supporting fires, including air strikes, to destruction of those targets which appear to constitute a major threat, or to improve the enemy’s offensive capability. (2) Prepare for offensive action by: Conserving ammunition; maintaining combat effectiveness through intensified training; preparation for and rehearsal of limited-objective attacks, to be launched near the end of the 30-day period in order to improve the MLR. _Part IV._ Every effort will be made to prevent unnecessary casualties.[330] [330] X Corps _Cmd Rpt_, Nov 51, 15–16. In view of these instructions, it is understandable that a lull set in along the X Corps front in December 1951. Most of the cold weather clothing had been issued during the preceding month, and work was largely completed for the “winterizing” of bunkers. It remained only to improve defensive installations as front line elements continued to send out patrols to maintain pressure against the enemy. And since the Communists were putting similar military policies into effect, both sides kept in contact with relatively small units.[331] [331] The source for the remainder of this section, unless otherwise stated, is the 1stMarDiv _HD_, Dec 51, 1–17. The enemy also busied himself with extending already formidable defenses in depth. And though he did not seek a fight, he showed no hesitation about accepting one. From 5 to 20 Marine patrols went out nightly during December, some of them manning night outposts called “duck blinds;”[332] occasional raids continued with relatively few contacts. In the rear of the Division area, helicopter patrols continued against guerrillas. [332] LtCol Harry W. Edwards, memo to G-3 dtd 3 Feb 1959. The 13 aircraft of HMR-161 had a busy month with 390 missions and 621 flights. Six thousand pounds of rations, 9,000 pounds of fuel oil in drums, 15,000 pounds of fortification material, and 15,000 pounds of cold weather clothing were among the supplies flown to the front. Personnel to the number of 2,022 were lifted, and cargo to the amount of 149,477 pounds.