Реферат: The U.S. Army Campaigns of World War II

Marshall ordered Lt. Gen. Dwight D. Eisenhower, then in England, to take command of the invasion. Meeting the November deadline required improvisation of every kind Army troops were hurriedly trained in amphibious warfare. Technicians modified commercial vessels to serve as landing ships. While General Eisenhower monitored operations from Gibraltar, American forces, convoyed directly from the United States, landed along the Atlantic coast of French Morocco, near Casablanca. Meanwhile, American and British troops sailing from England landed in Algeria. Despite efforts to win support among French military officers in North Africa, some fighting occurred. Nevertheless negotiations soon led to a cease-fire, and French units joined the Allied forces.

While the Allies tightened their grip on Morocco and Algeria, their troops raced to reach strategic positions in neighboring Tunisia. A month earlier the British in Egypt under Lt. Gen. Sir Bernard L. Montgomery had mounted a powerful attack on the Germans at El Alamein, sending Rommel and his German-Italian Panzer Army reeling back into Libya. If strong Allied forces could reach the coast of Tunisia, Rommel would be trapped between them and Montgomery's troops.

Awake to the threat, the Germans poured troops into Tunisia by air and sea, brushing aside weak French forces there. Axis air power, based in Sicily, Sardinia, and Italy, pounded the advancing Allied columns. As torrential December rains turned the countryside into a quagmire, the Allies lost the race. Instead of catching Rommel, they faced a protracted struggle. While his forces dug in along the southern border of Tunisia opposite Montgomery, a second powerful Axis force, the Fifth Panzer Army, barred the way to the Tunisian coast.

A chain of mountains separates coastal Tunisia from the arid interior. In a plain between two arms of the mountains and behind the passes in the west lay important Allied airfields and supply dumps. On 14 February 1943, the Axis commanders sent German and Italian forces through the passes, hoping to penetrate the American positions and either envelop the British in the north or seize Allied supply depots.

German forces quickly cut off and overwhelmed two battalions of American infantry positioned too far apart for mutual support, and the experienced panzers beat back counterattacks by American reserves, including elements of the U.S. 1st Armored Division. U.S. troops began evacuating airfields and supply depots on the plain and falling back to the western arm of the mountains. Dug in around the oasis town of Sbeitla, American infantry and armor managed to hold off the Germans through 16 February, but defenses there began to disintegrate during the night, and the town lay empty by midday on the 17th. From the oasis, roads led back to two passes, the Sbiba and the Kasserine. By 21 February the Germans had pushed through both and were poised to seize road junctions leading to the British rear.

Rommel and other German commanders, however, could not agree on how to exploit their success. Meanwhile Allied reinforcements rushed to the critical area. The 1st Armored Division turned back German probes toward Tebessa, and British armor met a more powerful thrust toward Thala, where four battalions of field artillery from the U.S. 9th Infantry Division arrived just in time to bolster sagging defenses. On the night of 22 February the Germans began to pull back. A few days later Allied forces returned to the passes. The first American battle with German forces had cost more than 6,000 U.S. casualties, including 300 dead and two-thirds of the tank strength of the 1st Armored Division.

In March, after the British repulsed another German attack, the Allies resumed the offensive. The U.S. II Corps, now under the command of Maj. Gen. George S. Patton, attacked in coordination with an assault on the German line by Montgomery's troops. American and British forces in the south met on 7 April as they squeezed Axis forces into the northeastern tip of the country. The final drive to clear Tunisia began on 19 April. On 7 May British armor entered Tunis, and American infantry entered Bizerte. Six days later the last Axis resistance in Africa ended with the surrender of over 275,000 prisoners of war.

The U.S. Army learned bitter lessons about the inadequacy of its training, equipment, and leadership in the North African campaign. Army Ground Forces acted quickly to ensure that American soldiers would receive more realistic combat training. Higher commanders realized that they could not interfere with their subordinates by dictating in detail the positions of their units. Troops had to be committed in division-size, combined arms teams, not in driblets. The problem posed by American tanks, outgunned by the more heavily armed and armored German panzers, took far longer to correct. But the artillery established itself as the Army's most proficient arm.

Sicily and Italy

Meeting in Casablanca in January 1943, President Roosevelt, Prime Minister Churchill, and the Combined Chiefs of Staff decided that the large Italian island of Sicily would be their next target. Montgomery's British forces landed on the southeast coast, while Patton's newly activated Seventh Army landed on the southwest, with the mission of seizing airfields and protecting the flank of the British drive. Airborne troops spearheading the attacks scattered wide of their targets but managed to disrupt enemy communications. Hours after the initial landings on 9 July, German armor struck the American beaches. Naval gunfire, infantry counterattacks, and the direct fire of field artillery landing at the critical juncture broke up the German formations. But two attempts to reinforce the beaches with parachute and glider-borne troops ended in disaster when Allied antiaircraft batteries mistook the transport planes for enemy aircraft and opened fire, causing severe losses.

Meanwhile, the Germans solidly blocked the British drive on the Sicilian capital, Messina. General Sir Harold R. L. G. Alexander, Allied ground commander, ordered Patton to push toward Palermo, at the western tip of the island. Once in Palermo, since the British drive was still stalled, his forces attacked Messina from the north. Patton used a series of small amphibious end runs to outflank German positions on the northern coastal road. American and British troops arrived in Messina on 17 August, just as the last Axis troops evacuated Sicily.

In late July the Allies decided to follow up their success in Sicily with an invasion of Italy. Having lost hope of victory, the Italian High Command, backed by the king, opened secret negotiations with the Allies. The Germans, suspecting that Italy was about to desert the Axis, rushed in additional troops.

The Germans swiftly disarmed the Italian Army and took over its defensive positions. A British fleet sailed into the harbor of Taranto and disembarked troops onto the docks, while the U.S. Fifth Army under Lt. Gen. Mark W. Clark landed on the beaches near Salerno on 9 September. The Germans reacted in strength. For four days vigorous attacks by German armor threatened the beaches. But on 16 September American and British forces made contact, and two weeks later American troops entered Naples, the largest city south of Rome. Allied plans called for a continued advance to tie down German troops and prevent their transfer to France or Russia, while Hitler decided to hold as much of Italy as possible.

As the Allies advanced up the mountainous spine of Italy, they confronted a series of heavily fortified German defensive positions, anchored on rivers or commanding terrain features. The brilliant delaying tactics of the German commander in Italy, Field Marshal Albert Kesselring, exacted a high price for every Allied gain. The campaign in Italy became an endless siege, fought in rugged terrain, in often appalling conditions, and with limited resources.

Moving north from Naples, the Allies forced a crossing of the Volturno River in October 1943 and advanced to the Winter Line, a main German defensive position anchored on mountains around Cassino. Repeated attempts over the next six months to break or outflank it failed. An amphibious end run, landing the U.S. VI Corps under Maj. Gen. John P. Lucas at Anzio in January 1944, failed to turn the German flank, for Lucas waited too long to build up his reserves before moving aggressively against the German defenses. Kesselring had time to call in reinforcements, including artillery, which soon brought every inch of Allied-held ground under fire. As the defenders dug in, the end run turned into another siege, as American and British troops repulsed repeated counterattacks.

Meanwhile, an American attempt to cross the Rapido River, timed to coincide with the Anzio landing, miscarried with heavy casualties. Allied efforts to blast a way through the enemy's mountain defenses proved futile, despite the use of medium and heavy bombers to support ground attacks around Cassino. Finally, in May 1944, a series of coordinated attacks by the Fifth Army and Eighth Army pried the Germans loose, and they began to fall back. On 4 June 1944, two days before the Normandy invasion, Allied troops entered Rome.

The Normandy invasion made Italy a secondary theater, and Allied strength there gradually decreased. Nevertheless, the fighting continued. The Allies attacked a new German defensive line in the Northern Appenines in August but were unable to make appreciable headway through the mountains. Not until spring of 1945 did they penetrate the final German defenses and enter the Po valley. German forces in Italy surrendered on 2 May 1945.

The Cross-Channel Attack

Preparations for an attack on German-occupied France continued as did the campaigns in the Mediterranean. The defeat of the German U-boat threat, critical to the successful transport of men and materiel across the Atlantic, had been largely accomplished by the second half of 1943. The success of the war against the U-boats was immeasurably aided by secret intelligence, code-named ULTRA, garnered by Anglo-American breaking of German radio communications codes. Such information also proved valuable to the commanders of the ground campaign in Italy and France.

By early 1944 an Allied strategic bombing campaign so reduced German strength in fighters and trained pilots that the Allies effectively established complete air superiority over western Europe. Allied bombers now turned to systematic disruption of the transportation system in France in order to impede the enemy's ability to respond to the invasion. At the same time, American and British leaders orchestrated a tremendous buildup in the British Isles, transporting 1.6 million men and their equipment to England and providing them with shelter and training facilities.

Detailed planning for the cross-Channel assault had begun in 1943 when the American and British Combined Chiefs of Staff appointed a British officer, Lt. Gen. Frederick E. Morgan, as Chief of Staff to the as yet unnamed Supreme Allied Commander. When General Eisenhower arrived in January 1944 to set up Supreme Headquarters, Allied Expeditionary Force (SHAEF), Morgan's work served as the basis for the final plan of assault. The Allies would land in Normandy and seize the port of Cherbourg. They would establish an expanded lodgment area extending as far east as the Seine River. Having built up reserves there, they would then advance into Germany on a broad front. Ground commander for the invasion would be General Montgomery. The British Second Army would land on the left, while the American First Army, under Lt. Gen. Omar N. Bradley, landed on the right. Intensive exercises and rehearsals occupied the last months before the invasion. An elaborate deception plan convinced the Germans that the Normandy landings were a feint, and that larger, more important landings would take place farther east, around the Pas de Calais. Here the Germans held most of their reserves, keeping their armored formations near Paris.

Developments on the Eastern Front also aided the success of the invasion. In early 1943 the Russians destroyed a German army at Stalingrad. The Germans tried to regain the initiative in the summer of 1943, attacking a Soviet-held salient near the Russian city of Kursk. In the largest tank battle known to history, they suffered a resounding defeat. Henceforth, they remained on the defensive, in constant retreat, while the Soviets advanced westward, retaking major portions of the Ukraine and White Russia during the fall and winter and launching an offensive around Leningrad in January 1944. By March 1944 Soviet forces had reentered Polish territory, and a Soviet summer offensive had prevented the Germans from transferring troops to France.

On 5 June 1944, General Eisenhower took advantage of a break in stormy weather to order the invasion of "fortress Europe." In the hours before dawn, 6 June 1944, one British and two U.S. airborne divisions dropped behind the beaches. After sunrise, British, Canadian, and U.S. troops began to move ashore. The British and Canadians met modest opposition. Units of the U.S. VII Corps quickly broke through defenses at a beach code-named UTAH and began moving inland, making contact with the airborne troops within twenty-four hours. But heavy German fire swept OMAHA, the other American landing area. Elements of the 1st and 29th Infantry Divisions and the 2d and 5th Ranger Battalions clung precariously to a narrow stretch of stony beach until late in the day, when they were finally able to advance, outflanking the German positions.

American and British beachheads linked up within days. While the Allies raced to build up supplies and reserves, American and British fighter aircraft and guerrillas of the French resistance blocked movement of German reinforcements. On the ground, Allied troops besieged Cherbourg and struggled to expand southward through the entangling Norman hedgerows. Earthen embankments hundreds of years old, matted with the roots of trees and shrubs, the hedgerows divided the countryside into thousands of tiny fields. The narrow roads, sunk beneath the level of the surrounding countryside, became deathtraps for tanks and vehicles. Crossroads villages were clusters of solidly built medieval stone buildings, ideal for defense. Small numbers of German infantry, dug into the embankments with machine guns and mortars and a tank or two or a few antitank guns for support, made advancing across each field costly.

With time short and no room to maneuver, the struggle to break out became a battle of attrition. Allied troops advanced with agonizing slowness from hedgerow to hedgerow, in a seemingly endless series of small battles. Advances were measured in hundreds of yards. Requirements for fire support far exceeded preinvasion planning, resulting in a severe shortage of artillery shells. The British made several powerful attempts to break through to the open country beyond the town of Caen, but were stopped by the Germans, who concentrated most of their armor in this threatened area. By 18 July the U.S. First Army had clawed its way into St. Lo and, on 25 July, launched Operation COBRA. As heavy and medium bombers from England pummeled German frontline positions, infantry and armor finally punched through the defenses. Pouring through the gap, American troops advanced forty miles within a week.

Rejecting his generals' advice, Hitler ordered a counterattack against the widening breakout by Germany's last available mobile forces in France. U.S. First Army forces stopped the Germans and joined Canadian, British, and Polish troops in catching the enemy in a giant pocket around the town of Falaise. Allied fighter-bombers and artillery now aided a massive destruction of twenty enemy divisions. Suddenly, it seemed the Allies might end the war before winter. Calling off a planned halt and logistical buildup, Eisenhower ordered the Allied forces to drive all-out for the German frontier.

With enemy forces in full retreat, French and American troops rolled into Paris on 25 August 1944. Meanwhile, veteran U.S. and French divisions, pulled out of Italy, landed on the beaches of the French Riviera. While French forces liberated the ports, the U.S. Seventh Army drove northward in an effort to cut off withdrawing German troops. Moving rapidly through the cities of Lyon and Besançon, they joined up with Allied forces advancing from Normandy on 11 September.

Victory seemed to be at hand. But by mid-September Allied communications were strained. Combat troops had outrun their supplies. British and Canadian forces advanced into the Netherlands, and American troops crossed Belgium and Luxembourg and entered German territory. Then both met strong resistance. Bad weather curtailed unloading of supplies directly across the Normandy invasion beaches, while the ports on the North Sea and the Mediterranean were in ruins. As logistical problems piled up, Eisenhower rejected as too dangerous British pleas to channel all available resources into one deep thrust into Germany. He did, however, sanction one last bold gamble: Operation MARKET-GARDEN. Two U.S. and one British airborne division were to open the way for a British armored thrust to seize a bridge across the lower Rhine at Arnhem in the Netherlands. The airborne troops took most of their objectives, but German resistance was much stronger than expected, and the operation failed to gain a bridgehead across the Rhine.

Battles of Attrition

There was to be no early end to the war. Despite its recent defeats, the German Army remained a dangerous foe, fighting for its life in prepared defenses. Furthermore, as the Allies approached the frontiers of the Reich, they encountered a series of formidable terrain obstacles--major rivers, mountains, and forests--and the worst weather in over thirty years. Yet Eisenhower, believing that unremitting pressure against the enemy would shorten the war, called for the offensive to continue. Battles of attrition followed throughout October and November, all along the front.

Canadian and British soldiers trudged through the frozen mud and water of the flooded tidal lowlands in the Netherlands to free the great Belgian port of Antwerp. The U.S. First Army took the German city of Aachen on 21 October. The drive of General Patton's Third Army toward the German border halted on 25 September due to shortages of gasoline and other critical supplies. Resuming the offensive in November, Patton's men fought for two bloody weeks around the fortress town of Metz, ultimately winning bridgeheads over the Saar River and probing the Siegfried Line. In the south the U.S. Seventh Army and the First French Army fought their way through the freezing rain and snow of the Vosges Mountains to break out onto the Alsatian plain around Strasbourg, becoming the only Allied armies to reach the Rhine in 1944. But there were no strategic objectives directly east of Strasbourg, and a pocket of tough German troops remained on the west bank, dug in around the old city of Colmar.

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