The Rhine had held for 1,400 years. On the night of March 22, 1945, it fell in near silence, broken only by the splash of plywood boats and whispered orders passed man-to-man through the dark vineyards of Oppenheim, Germany, catching the entire German High Command—and the Allied high command—completely off guard.
At 10:00 p. m. , under a thin overcast and in absolute tactical silence, soldiers of the U.
S. Fifth Infantry Division manhandled M2 assault boats down to the water’s edge. There was no artillery preparation, no smoke screen, no air cover, and no roaring engines.
Every order for four hours had been passed in a whisper. The men of the 11th Infantry Regiment slipped into the cold, black current and began paddling. Across the river, their reception committee was seven elderly German men warming themselves at a farmhouse fire.
That was the entire defensive force on that stretch of Germany’s most sacred river. Nobody in Berlin was watching. Nobody had been assigned to watch.
According to every calculation of the German General Staff, nothing was supposed to happen at Oppenheim. They were catastrophically wrong.
The crossing was a feat of tactical audacity that defied the doctrinal norms of the era. The Rhine at that point was roughly 300 meters wide, with a current moving at three knots. The assault troops were experienced—the Fifth Division had made twenty river crossings since the fall of 1944, from the Moselle to the Saar.
They moved the boats by hand across muddy vineyard rows to avoid the noise of truck engines. In the dead quiet, they launched the first wave at 10:30 p. m.
The lead companies reached the east bank with no enemy fire. Three battalions crossed within two hours against effectively zero resistance. German defenders, when encountered at all, were elderly Volkssturm militia with boltaction rifles and less than a week of training.
They surrendered before Americans even leveled their weapons.
The operation was the brainchild of Lieutenant General George S. Patton, who had received informal authorization from his superior, General Omar Bradley, on March 19. They kept it secret from Supreme Headquarters Allied Expeditionary Force at Reims.
Patton’s chosen site was Oppenheim because the German command deemed it operationally useless—no rail line, no industry, no strategic value. That was precisely why it worked. By 2:00 a.
m. , the entire 11th Infantry Regiment was across. By 6:00 a.
m. , six full battalions were dug in on the east bank. Total American casualties for the assault: 34 killed and wounded.
While the infantry advanced, the 249th Engineer Combat Battalion began constructing a 1,200-foot floating pontoon bridge across the river at Nierstein. They completed the span in 18 hours—a job the manual said should take two to three days—while under sporadic artillery fire and air attacks that never scored a direct hit. By late afternoon on March 23, American tanks were rolling across.
The bridgehead expanded. The news reached Bradley at 12th Army Group headquarters in Belgium mid-morning. Patton called on a secure line with a deliberately casual tone: “Brad, don’t tell anyone, but I’m across.”
Bradley replied, “Well, I’ll be damned. You mean across the Rhine?” Patton confirmed, noting that few Germans were around to notice.
Bradley agreed to keep quiet, but by evening, Patton was insistent the world be told. He wanted the world to know the Third Army crossed before Montgomery.
The development was a direct breach of Allied strategy. Field Marshal Bernard Montgomery was 300 miles north, finalizing Operation Plunder, the largest planned river crossing in Western military history, involving 1. 25 million men, 4,000 artillery pieces, and 14,000 paratroopers.
He had intended to be the first Allied commander to force the Rhine. He was about to appear, in front of every newspaper in the English-speaking world, as though he had arrived late to his own ceremony. When Eisenhower learned of the Oppenheim crossing, his outward calm masked fury at the political fallout.
He immediately drafted five letters: congratulations to Patton, warmth to Bradley, reassurance to Montgomery that Plunder was still the main effort, a factual summary to General Marshall in Washington, and a tone of allied unity to Winston Churchill. The coalition held, but the strain was palpable.
Montgomery launched Operation Plunder on the night of March 23 with an earth-shattering barrage from 4,000 guns. His infantry crossed at Wesel and Rees, and Operation Varsity followed on the morning of March 24 with 14,000 airborne troops dropping from 1,600 aircraft. The airborne operation suffered horrific losses—over a thousand casualties, including dozens of transport aircraft shot down—but it succeeded.
Total Allied casualties for Plunder exceeded 6,700. Churchill flew to the front to see Montgomery’s crossing personally, posing for cameras on the east bank. He did not visit Oppenheim.
Patton was already 20 miles east of the Rhine, driving toward Frankfurt.
The contrast between the two crossings defined the legacy of both commanders. Patton’s assault cost 34 American lives. Montgomery’s cost thousands and achieved the same result three days later.
Patton himself crossed the pontoon bridge at Nierstein on the afternoon of March 24. Halfway across, he stopped the jeep, got out, and urinated into the Rhine. “I have been looking forward to this for a very long time,” he said.
On the east bank, he scooped up two handfuls of German soil. “Thus, William the Conqueror,” he declared. Within a week, Frankfurt fell.
Within a month, the Third Army was in Bavaria. By the first week of May, it was on the Austrian border. The war ended six weeks and three days after the Oppenheim crossing.
Patton did not survive the year. On December 9, 1945, his Cadillac collided with a truck near Mannheim. He died of a pulmonary embolism on December 21, paralyzed from the neck down.
He was 60. He is buried at the American military cemetery at Hamm, Luxembourg, alongside the men of the Third Army who died in the Bulge. The monument at Oppenheim, dedicated in 2017, names the 249th Engineer Combat Battalion and notes that the “remarkable engineering accomplishment undoubtedly contributed to the shortening of the war, thus saving countless lives on both sides.”
At the dedication, Helen Patton and Catherine Rommel—the granddaughters of the two opposing generals—stood together on the ground where their grandfathers had faced each other across the river.
The last surviving American veteran of the crossing, Robert Sheldo, a 19-year-old private in the 249th, gave a short speech at the memorial before his death. The plaque reads simply: “In part, this remarkable engineering accomplishment undoubtedly contributed to the shortening of the war, thus saving countless lives on both sides of the conflict.” There is no longer any living American who was on that bridge that night.
The Rhine still runs past Oppenheim, and the vineyards still produce Riesling. The memorial stands on the site where the first assault boat touched the east bank in darkness. For the men who did the work, it was not a competition between generals.
It was an army that got itself across a river that had held for fourteen centuries, in the dark, in silence, at almost no cost, because they knew how.