On Dec. 16, 1944, Adolf Hitler launched an ambitious but badly planned counterattack meant to break the back of the Allied forces and allow the Nazis to dictate the peace terms that would end the war. Instead, it guaranteed his defeat, but not before forcing hundreds of thousands of soldiers on each side to fight in bitter, near-Arctic levels of cold amidst driving winter storms and winds. Managing a surprise attack with dozens of divisions is no easy feat. Here's how they did it at the Battle of the Bulge.
First, the Germans initiated a crackdown on all communications. Transmissions related directly to the offensive were limited to the telephone lines and couriers. But American intelligence was also struggling with a general plunge in the volume of intelligence since the Germans had pulled out of France and concentrated in Germany.
In France, German communications were more reliant on the use of radio waves, which could be intercepted. French citizens were also likely to report Nazi movements, providing near real-time intel. On the German side of the border, both of these advantages disappeared.
Worse, the few reports that did indicate a German buildup, such as the statements of captured German deserters, were ignored or brushed off as untrustworthy.
In the days leading up to Dec. 16, these problems were compounded by a dense fog that grounded Allied reconnaissance planes and limited visibility to the point that Allied soldiers were unlikely to spot much German movement, especially in the thick Ardennes forest.
Despite these advantages, the German troop buildup was a logistical nightmare. Hitler's plan required 30 divisions, including 12 panzer divisions, and over 1,000 planes be transported to the Ardennes using only trains and horses to limit fuel consumption. In addition to all supplies consumed, Hitler wanted to stage 4.5 million gallons of fuel and 50 trainloads of ammunition for the advance.
All of this buildup had to take place under Allied air attack without the Allies getting wise. Surprisingly, the Germans were mostly successful.
The troop buildup portion was actually more successful than planned with approximately 1,500 troop trains and 500 supply trains carrying 12 armored divisions and 29 infantry divisions to the staging areas for the offensive.
The aerial buildup was less successful. The Germans had 1,250 planes ready before Dec. 16 — 250 less than originally planned.
But the weather turned in the German's favor in the days before the attack. The heavy fogs that limited reconnaissance flights also grounded most other planes, neutering the Allied air forces and eliminating that advantage.
So, on Dec. 16, the Germans launched their three-pronged attack against what were largely inexperienced and exhausted troops defending the forest. The most combat-ready troops had been moved to other areas to prepare for an Allied invasion across the German borders.
The Germans further complicated the American's situation by sending thousands of English-speaking German troops behind American lines in captured uniforms and jeeps to commit acts of sabotage and to spy on the American response.
Supreme Allied Commander Gen. Dwight D. Eisenhower's staff briefing was interrupted that night with word of the German advance, and he immediately pegged it as a massive counterattack with the goal of driving to the Atlantic. He ordered both the 7th and 10th Armored divisions to drive in to help.
Army Gen. George S. Patton, the commander of the Third Army, which contained the 10th Armored Division, was ordered to "attack in column of regiments and drive like hell."
Many American units were quickly surrounded and forced to fight against a siege by German units. The 82nd and 101st Airborne Divisions were ordered forward to relieve pressure on the American lines, arriving before the siege was complete.
The 101st was dedicated predominantly to the defense of Bastogne, a city where seven key highways met, making it crucial for the victory or defeat of the German attack. When the Germans requested the 101st's surrender from Brig. Gen. Anthony McAuliffe and his staff, the general famously responded with "NUTS!" and continued the defense.
For the first week, the Allies fought desperate defensive and delaying actions against the Nazi juggernaut, usually at a disadvantage in terms of numbers, supplies, and equipment.
But the weather cleared on Dec. 23, and Allied air forces surged into the sky to beat back the Luftwaffe and provide support to the beleaguered forces on the ground. Bombing runs broke up German forces in staging areas while strafing by fighters tore through attacking columns.
A few days later, Patton's Third Army reached the German lines and cut a path through them. Hitler's bold advance had fallen well short of its goal of the Belgian coast and German units, overextended and undersupplied, began to be rounded up and captured. By the end of January, the Allies had regained the lost ground and were once again marching towards Berlin.