In September 1944, General Dwight D. Eisenhower was recovering from a knee injury suffered in an emergency landing during an inspection trip to the front. He was confined to his aircraft at Brussels airport, unable to walk on the tarmac. It was his first meeting with Field Marshal Bernard Montgomery since late August.
Upon arrival, Montgomery imperiously demanded that Eisenhower's administrative aide leave while his own aide stayed. True to his habit of patience and conciliation, Eisenhower agreed. Montgomery then launched an escalating, ferocious attack on the Supreme Commander's conduct of the war. He did not merely argue; he lectured.
Montgomery tore up a file of Eisenhower's letters in front of him, argued for a concentrated northern thrust, and demanded priority and supplies. The Supreme Commander of the Allied Expeditionary Force sat in his plane, his injured leg propped up, and listened to all of it.
Eisenhower did not see merely an impatient subordinate. He believed he was watching the entire international alliance come apart at the seams. Montgomery's vociferous appeal stirred political and national complications that strained the wartime coalition. The argument was not only about military theory. It was about who controlled the war and who would be remembered as having won it.
Instead of continuing the advance toward Germany on a broad front, Montgomery called for halting all offensive operations except one powerful, comprehensive thrust in his sector, aimed at Germany's great industrial complex in the Ruhr Valley and beyond. Give him everything. Stop everyone else. Trust him to finish the war.
The argument was not insane. There were those who supported the view that had Eisenhower decided this weeks earlier, say in mid-August, to concentrate all available resources in the north and halt all other offensive operations, the Allies might have been able, with one bold, powerful strike deep into Germany, to end the war in late summer or early autumn.
Montgomery championed the narrow-front approach that would concentrate superior Allied forces, mainly under British and Canadian command, in a single decisive blow northeast through Holland toward the heart of the industrial Ruhr, aiming to encircle and destroy the bulk of the German Army Group B and perhaps end the war by Christmas. It almost sounded reasonable. A moment later, it would become clear why it was not.
On September 4, 1944, Montgomery's forces had captured the huge Belgian port of Antwerp, practically intact. Yet the Scheldt estuary leading to it remained under German control, preventing its use. That single fact was the fundamental flaw beneath Montgomery's entire argument.
As Allied supply lines stretched farther and farther from the Normandy beaches, the problem of supplying the advancing troops was rapidly spinning out of control. With the French railway network crippled by bombing, almost all supplies had to be moved by truck, and there were not enough trucks. The armies had outrun their own supply lines.
Eisenhower's advance had moved faster than schedule, outpacing a supply line that ran all the way back to the landing beaches. Some 90 percent of reinforcements and materiel were still coming across the Channel from England. Allied armies were suffering acute shortages, especially of gasoline. Patton's tanks began to halt—not from enemy action, but from lack of fuel.
On an ordinary day, Patton's Third Army and Courtney Hodges's First Army consumed a total of 800,000 gallons of fuel. There was no ready system to deliver that quantity to the front. The "Red Ball Express" convoy system, born in an emergency 38-hour meeting, began operating on August 25, 1944. The Express, relying mainly on African American soldiers, ran nearly 6,000 vehicles that moved about 12,500 tons of supplies per day. It was an extraordinary improvisation. It was not enough.
A survey of supply capacity at the time showed that American port unloading averaged less than 35,000 tons per day, thousands of tons short of requirements. The numbers were harsh and unforgiving. Every army at the front was desperately short. Montgomery's proposal was built on this crisis.
He believed the supply shortage made it necessary to concentrate on a more limited advance. He proposed that Eisenhower halt the American advance and direct available supplies to British and Canadian forces on the Allied left, where the terrain was more suitable for operations. For obvious reasons, this proposal found no favor with the Americans.
Eisenhower recognized that Montgomery's strategy was politically dangerous. Here matters become interesting. Montgomery wanted to mass 40 divisions in an intensive offensive across the Rhine to destroy the German army in one blow, take Berlin, and end the war by the end of 1944.
Montgomery's claim that his offensive comprised 40 divisions exceeded the logistical capacity to support it without Antwerp, which was still in German hands. The more realistic figure was only 12 divisions. Twelve divisions would not constitute a decisive blow. It was more like a spear thrust into Germany with 100 miles of exposed flanks on either side.
There were serious reservations about the ability of the Allied logistical system to support a narrow-front strategy. At that time, there were not enough working ports to support large formations far from the coast. The road and rail transport network was already under severe strain, and there were concerns about protecting narrow supply lines stretching deep into enemy territory, because Montgomery had failed to seize the Scheldt estuary quickly and open Antwerp to Allied shipping until December.
Eisenhower's Supreme Headquarters logistics officials calculated at the time that only 12 divisions could be supported in a rapid advance. Twelve divisions into Germany without a port, without secure flanks, while the Germans were regaining their balance. By early September 1944, the Germans had effectively recovered from their defeat and fallen back to defensible positions with new reserves of men and materiel. That was the environment through which Montgomery wanted to push 40 divisions. He could not supply 12.
On September 10, 1944, in Eisenhower's aircraft at Brussels airport, the two men reviewed the situation as before: the single thrust in the north versus the broad front. Eisenhower listened. He did not agree. But he also did not simply say no.
Approving Montgomery's full offensive without a solid logistical base and without the ability to mount diversionary attacks elsewhere on the front would have been an invitation to its destruction. Eisenhower believed that advancing toward the Rhine on a broad front was better, then pausing to reorganize and resupply before plunging into the Third Reich at full strength.
He also could not dismiss the argument entirely. Eisenhower acknowledged that the strategic opportunities in Montgomery's northern sector were attractive—the Nazis' vital Ruhr arsenal, the good tank country of the North German Plain—and granted supply priority to the Twenty-First Army Group. So Eisenhower arrived at a compromise.
He granted Montgomery what he called limited priority. He approved a bold airborne operation aimed at seizing a bridgehead across the Rhine at Arnhem. Eisenhower approved Operation Market Garden and gave it limited priority in terms of supplies, but only as part of a broad-front advance. Eisenhower promised that aircraft and trucks would deliver an additional 1,000 tons of supplies per day to Montgomery for Market Garden.
Yielding to Montgomery's demands, Eisenhower ordered the daily transport of about 500 tons of supplies over 300 miles from Bayeux in the Normandy base area to Brussels, 17,000 tons in total. This placed an additional burden on Red Ball resources at a time of acute truck shortage. Montgomery left Brussels after his operation was approved. He had not gotten everything he wanted. He never stopped wanting it.
Operation Market Garden was fought from September 17 to 25, 1944, and ended in a British defeat at the Battle of Arnhem when German forces blocked the ground troops on the narrow road and they could not reach the airborne forces in time. Neither Eisenhower nor Montgomery initially gave top priority to opening the port of Antwerp. The Allies' failure to secure rapid access to Antwerp is considered one of the greatest tactical errors of the war.
The operation meant to prove the narrow-front theory instead proved exactly what Eisenhower had feared. The narrow road was the problem. The flanks were the problem. The supply line was always the problem. On September 18 and 21, as the Battle of Arnhem continued, Montgomery tried one last time to adopt his narrow-front strategy through telegrams to Eisenhower's chief of staff. Once again, Eisenhower rejected the narrow-front concept.
The argument was not over. It had only just begun. Field Marshal Montgomery insisted on giving priority to his Twenty-First Army Group's offensive in the north, while General Bradley and General Devers insisted on priority for the center and south of the front. Eisenhower worked tirelessly to meet the demands of competing commanders to improve the performance of Allied forces, often granting them tactical freedom. He was not weak. He was managing the most complex military alliance in history, and he knew it.
On December 16, 1944, the Germans launched a surprise counteroffensive, the Battle of the Bulge, which the Allies successfully repelled in early 1945 after Eisenhower repositioned his armies and weather allowed American air power to join the fight.
On the morning of December 20, 1944, Eisenhower transferred temporary command of the American First and Ninth Armies to British Field Marshal Montgomery. During operations on the northern side of the Bulge and the Allied lines, communications were cut between General Courtney Hodges's First Army and General William Simpson's Ninth Army and their commander, General Omar Bradley.
This was the sound military decision. But it was also the spark that lit a fire that nearly destroyed the alliance. On January 7, 1945, Montgomery held a press conference at his headquarters in Belgium and spoke for an hour without notes about the Allied response to the German attack.
While he spent considerable time praising Eisenhower and the American troops on the ground, he left many with the impression that he believed he had saved the situation. Montgomery had already angered many American officers with his caution in the field, his arrogance outside it, and his readiness to belittle his American counterparts.
The last straw was Montgomery's attempt to distort the facts of the Battle of the Bulge. He made his performance in the Ardennes appear not only more heroic but decisive, necessarily diminishing the American performance. Given the heavy American losses in the battle and the surrender of 7,500 men of the 106th Infantry Division, General Omar Bradley complained loudly to Eisenhower, who in turn relayed the complaints to Churchill.
The German propaganda machine made matters worse. Joseph Goebbels, the Nazi propaganda minister, exploited a report by an Australian war correspondent about the press conference. The broadcast was edited to make Montgomery's words appear anti-American, then aired by the German propaganda machine. Staff at General Bradley's headquarters heard the fake news report and were taken in by the trick.
The relationship between Eisenhower and Montgomery reached its lowest point in January 1945. Churchill tried to repair the damage with a speech in the House of Commons, acknowledging that the Americans had done most of the fighting and suffered most of the casualties. It did not work.
Eisenhower's patience ran out. He wrote to Montgomery directly. The letter was not diplomatic. It was precise. It laid out the choice in clear terms: either stop demanding overall command of Allied ground forces, or Eisenhower would go to General George Marshall to ask the Combined Chiefs of Staff to choose between them. One of them would then be relieved of his post.
Montgomery was fighting the mentality of the war of 1942 in the reality of 1945. He failed to realize that supreme command was as much a political entity as a military one. Eisenhower's task was to preserve the cohesion of the alliance. Montgomery had forced Eisenhower to choose between his army and his British ally. And when forced to choose, Eisenhower chose his own men.
The message that arrived from Montgomery the next morning was different from any he had sent before. The demands disappeared. An apology replaced them. Montgomery acknowledged that he had been wrong, that Eisenhower was the boss, and that he would comply with orders.
Because Montgomery failed to seize the Scheldt estuary quickly and open the port of Antwerp, which remained closed to Allied shipping until December, logistics experts calculated that only 12 divisions could be supported in a rapid advance. That failure drained months of campaigning and thousands of lives. The entire argument for the single thrust rested on a port Montgomery himself had left unusable.
Eisenhower's strategy achieved its objective of destroying the German armed forces, largely because it included vital requirements for victory. The pace of the advance was logistically sustainable except for a period in late August and early September 1944 when supply capabilities were outstripped—a situation worsened by Montgomery's failure to clear the Scheldt estuary quickly enough and open the vital port of Antwerp.
Montgomery proposed a plan in which he would lead a concentrated offensive on a single axis with a narrow front, which he claimed would rapidly penetrate Germany's crumbling defenses, reach its industrial heartland, and win the war in weeks rather than months. It did not happen. It was not going to happen. Logistical constraints severely limited the feasibility of such a deep thrust.
The rapid advance after Normandy exhausted supply lines, as Allied forces outran their logistical capabilities by September 1944, necessitating a halt until Antwerp was cleared and opened for full operations on November 28, 1944, which provided the shipping capacity needed to support any major offensive into Germany.
Without Antwerp's capacity, the narrow front risked stalling halfway from lack of fuel and ammunition, exposing its flanks to German counterattacks from dispersed reserves. Supply lines were never an obstacle to victory. They were a condition of it.
The argument between the two men, which began over military strategy, turned into a full-blown dispute, a reflection of overlapping tensions in a changing Western world. Behind the disagreement and the argument lay a tense legacy and bitterness despite their victory.
With the United States rising as the foremost power in the Western world and the British Empire declining unprecedentedly, the clash between Eisenhower and Montgomery represented the unconscious power struggle between the two nations, embodying a changing world in the mid-twentieth century. Accordingly, the war would not end by Christmas 1944.
The Western Allies resumed Eisenhower's broad-front strategy, and the Rhine was not crossed until March 1945. By late March, the Allies had crossed the Rhine in the British sector to the north and in the sectors of the American First and Third Armies. Within a week, the Americans encircled the Ruhr region along with an entire German army group—Eisenhower's way, not Montgomery's way.
The broad front exhausted Germany along every mile of its western border. It denied the Germans the chance to concentrate against a single offensive. It preserved the cohesion of the alliance. It nourished every army in the field until the Wehrmacht had nothing left to defend with.
Supply lines do not win wars the way cavalry charges do. They win wars by making everything else possible, and by making everything impossible for the enemy. Montgomery's plan belonged to a bygone era, when wars could be won in a single afternoon by one stroke of genius.
Montgomery's plan was entirely unsuited to modern industrial war against a skilled, expert, and motivated enemy, as it did not cause the attrition of manpower and materiel necessary to fatally break the opponent's immense defenses. Eisenhower understood this from the first argument in Brussels. Montgomery understood it only when Eisenhower finally told him the argument was over.
That man who sat motionless in the plane, unable to walk and listening for an hour to lectures from his most difficult subordinate, had held the alliance together long enough to achieve victory. That was the task. And he accomplished it.