Tragedies such as this did occur and there is no way of knowing how many men were killed by friendly fire.Far be it from me to make excuses for such a blunder, but my input (based on experience) may help clarify a little. This incident happened a day after the massive German counter attack known as the "Battle of the Bulge" began. Confusion and near panic prevailed throughout the Allied effort, including the Eighth AF. An important factor....how close was this compound to the breakthrough? The navigator had very little to do with the goofup. He does not choose targets.At 24,000 feet, it is impossible to distinguish such objects as guard towers and security fences.In all probability, G-2 (Intelligence) was largely responsible.The Allies lost 50,000 men in that battle which lasted over a month.The tragic fact of those helpless prisoners being killed will certainly never be reconciled. May God bless them and the poor guys who will forever live with guilt.