Armored and the 7th Armored (so vague was information inside the perimeter) were on their way to Bastogne; to the men in the line this was heartening news.
What may have been the biggest morale booster came with a reverse twistthe enemy "ultimatum." About noon four Germans under a white flag entered the lines of the 2d Battalion, 327th. The terms of the announcement they carried were simple: "the honorable surrender of the encircled town," this to be accomplished in two hours on threat of "annihilation" by the massed fires of the German artillery. The rest of the story has become legend: how General McAuliffe disdainfully answered "Nuts!"; and how Colonel Harper, commander of the 327th, hard pressed to translate the idiom, compromised on "Go to Hell!" The ultimatum had been signed rather ambiguously by "The German Commander," and none of the German generals then in the Bastogne sector seem to have been anxious to claim authorship.  Lt. Col. Paul A Danahy, G-2 of the 101st, saw to it that the story was circulated-and appropriately embellished-in the daily periodic report: "The Commanding General's answer was, with a sarcastic air of humorous tolerance, emphatically negative." Nonetheless the 101st expected that the coming day-the 23d-would be rough.
The morning of 23 December broke clear and cold. "Visibility unlimited," the air-control posts happily reported all the way from the United Kingdom to the foxholes on the Ardennes front. To most of the American soldiery this would be a red-letter day-long remembered-because of the bombers and fighter-bombers once more streaming overhead like shoals of silver minnows in the bright winter sun, their sharply etched contrails making a wake behind them in the cold air.
In Bastogne, however, all eyes looked for the squat planes of the Troop Carrier Command. About 0900 a Pathfinder team dropped inside the perimeter and set up the apparatus to guide the C-47's over a drop zone between Senonchamps and Bastogne. The first of the carriers dropped its six parapacks at 1150, and in little more than four hours 241 planes had been vectored to Bastogne. Each plane carried some twelve hundred pounds, but not all reached the drop zone nor did all the parapacks fall where the Americans could recover them. Nevertheless this day's drop lessened the pinch-as the records of the 101st gratefully acknowledge. On 24 December a total of 160 planes would take part in the drop; poor flying weather on Christmas Day virtually scrubbed all cargo missionsalthough eleven gliders did bring in a team of four surgeons and some POL badly needed by Roberts' tanks. The biggest airlift day of the siege would come on the 26th with 289 planes flying the Bastogne run. 
The bulk of the air cargo brought to Bastogne during the siege was artillery ammunition. By the 24th the airborne batteries were down to ten rounds per tube and the work horse 420th Armored Field Artillery was expending no more than five rounds per mission, even on
 In a television interview early in 1960 General von Luettwitz admitted that he was responsible for the ultimatum to the Bastogne garrison. This confirms a like statement made to Colonel Marshall in 1945 but later denied by Luettwitz.
 A complete listing of the Bastogne airdrop missions, carrier losses, weather conditions, and similar information can be found in Thompson's MS, Air Supply to Isolated Units, pp. 64-135.