When the Tet Offensive began, feelings ran high at MACV that the base was in for a serious attack. In I Corps, the Tet Truce had been cancelled in apprehension of a communist assault that never happened. The offensive passed Khe Sanh by and the intermittent battle continued. Westmoreland's fixation upon the base continued even as the battle raged around him in Saigon. On 1 February, as the offensive reached its height, he wrote a memo for his staff—which was never delivered—stating: "The enemy is attempting to confuse the issue ... I suspect he is also trying to draw everyone's attention from the area of greatest threat, the northern part of I Corps. Let me caution everyone not to be confused."