The Italian Campaign of World War II was one of the longest and most difficult Allied military operations of the entire war. Lasting from July of 1943 to May of 1945, the campaign saw Allied forces invade the Italian peninsula and fight their way northward against Nazi German resistance. The campaign was fought by the Allied Powers, which included forces from the United States, Britain, Canada, and a range of other nations, against the Axis Powers of Nazi Germany and fascist Italy. In general, historians consider the Italian Campaign to have been important for several reasons, including: the removal of Italy from the war as an Axis Power, the significant military resources it drew away from other fronts, and its overall contribution to the Allied victory in Europe.
WHAT WAS WORLD WAR II?
World War II lasted from 1939 to 1945 and became the largest and deadliest war in all of human history. The war began on September 1st, 1939, when Nazi Germany, under the leadership of Adolf Hitler, invaded the country of Poland. The war unfolded across two main theaters of conflict: the European Theater and the Pacific Theater. The European Theater was dominated by the struggle between the Allied Powers and the Axis Powers of Nazi Germany and fascist Italy, while the Pacific Theater was dominated by the conflict between the Allied Powers and Imperial Japan. As such, the Italian Campaign was one of the major Allied operations of the European Theater of World War II.
ITALIAN CAMPAIGN – BACKGROUND
To fully understand the Italian Campaign, it is first important to understand the events that led to it. By 1943, the balance of power in World War II was beginning to turn against the Axis Powers. For instance, Nazi Germany had suffered a major defeat at the Battle of Stalingrad, which lasted from August of 1942 to February of 1943 and resulted in the destruction of an entire German Sixth Army on the Eastern Front. At the same time, Allied forces had succeeded in driving the Axis out of North Africa by May of 1943, following the defeat of the German-Italian forces under Field Marshal Erwin Rommel at the Second Battle of El Alamein in November of 1942.
With North Africa secured, Allied commanders began planning the next stage of the war in Europe. The Allied leadership, including American President Franklin D. Roosevelt and British Prime Minister Winston Churchill, agreed that an invasion of Sicily and then mainland Italy offered several strategic advantages. For instance, an invasion of Italy would knock fascist Italy out of the war, open up the Mediterranean Sea for Allied shipping, and force Nazi Germany to divert troops from other fronts, including the critical Eastern Front where Soviet forces were engaged in a massive struggle against Nazi German forces.
ITALIAN CAMPAIGN – INVASION OF SICILY
The Italian Campaign began with the Allied invasion of Sicily, an island located off the southern tip of the Italian peninsula. The Allied invasion of Sicily was also referred to as ‘Operation Husky’. The invasion began on July 9th, 1943, and involved a large combined airborne and amphibious assault by American, British and Canadian forces. It was one of the largest amphibious operations of the entire war, with approximately 150,000 Allied troops landing on the island in the opening stages.
Allied forces faced resistance from both Italian and Nazi German troops defending the island. However, the Allied advance was generally successful, and within weeks the Axis forces were pushed toward the northeastern corner of the island near the city of Messina, Sicily. For instance, American forces under General George S. Patton swept rapidly through western Sicily, while British and Canadian forces under General Bernard Montgomery advanced along the eastern coast. Nazi German forces carried out a defensive withdrawal and managed to evacuate much of their strength across the Strait of Messina to the Italian mainland before the island fell. Allied forces captured Sicily on August 17th, 1943, bringing Operation Husky to a successful end.
The invasion of Sicily had an immediate political impact on fascist Italy. On July 25th, 1943, Italian King Victor Emmanuel III had Benito Mussolini, the fascist dictator of Italy, arrested and removed from power. This was an important development because it showed that the Italian government was no longer willing to continue the war under Mussolini’s leadership. Italy subsequently surrendered to the Allied Powers on September 8th, 1943, effectively removing Italy from the war as an Axis Power.
ITALIAN CAMPAIGN – INVASION OF MAINLAND ITALY
Following the fall of Sicily, Allied forces crossed the Strait of Messina and landed on the southern tip of the Italian mainland on September 3rd, 1943. This was known as ‘Operation Baytown’ and was led by British and Canadian forces under General Bernard Montgomery. A second and larger landing followed on September 9th, 1943, near the city of Salerno, Italy, and was known as ‘Operation Avalanche’. This landing involved American and British forces and was intended to secure a larger foothold on the Italian peninsula and allow the Allies to advance northward more rapidly.
It should also be noted that despite Italy’s surrender on September 8th, 1943, Nazi Germany responded quickly and decisively. For instance, Nazi German forces took up key positions throughout Italy and established a series of strong defensive lines across the Italian peninsula to slow the Allied advance. Furthermore, Nazi German forces freed Mussolini from captivity on September 12th, 1943, and installed him as the leader of a new Nazi German-backed puppet state in northern Italy, known as the ‘Italian Social Republic’. As a result, the Italian Campaign did not become an easy advance northward after Italy’s surrender. Instead, Allied forces found themselves fighting a difficult and costly campaign against well-organized Nazi German defenses.
The Allied advance northward through Italy was slow and costly throughout 1943 and 1944. As mentioned above, Nazi German forces established a series of strong defensive positions across the Italian peninsula that took advantage of the country’s rugged mountainous terrain. The most formidable of these was the ‘Gustav Line’, a heavily fortified defensive line that stretched across the Italian peninsula approximately 85 miles (137 kilometers) south of Rome. Regardless, after intense fighting the Gustav Line was finally broken in May of 1944 during a major Allied offensive known as ‘Operation Diadem’. In this offensive, Allied forces including American, British, Canadian, Polish, French, and other troops attacked the German defenses simultaneously along the full width of the front.
With the Gustav Line broken, Allied forces advanced rapidly northward and entered Rome on June 4th, 1944, marking the first liberation of a major Axis capital city during World War II.
Following the fall of Rome in June of 1944, the Italian Campaign continued northward but received less strategic priority after the Allied landings in Normandy, France, on June 6th, 1944. Regardless, in April of 1945, Allied forces launched a final major offensive in northern Italy. Nazi German resistance collapsed rapidly as the overall situation in Nazi Germany itself deteriorated.
Benito Mussolini was captured by Italian partisans while attempting to flee to Switzerland and was executed on April 28th, 1945. Nazi German forces in Italy formally surrendered on May 2nd, 1945, several days before the general Nazi German surrender on May 8th, 1945.
ITALIAN CAMPAIGN – SIGNIFICANCE
The Italian Campaign of World War II was significant for several reasons. First, it removed Italy from the war as an Axis Power and was directly responsible for the downfall and death of Benito Mussolini. This was an important step in the overall Allied victory in Europe, as it eliminated one of the three main Axis nations from the conflict.
Second, the Italian Campaign forced Nazi Germany to commit large numbers of troops and resources to defending the Italian peninsula throughout 1943, 1944 and into 1945. This placed additional strain on the overall German war effort at a time when Nazi Germany was also under enormous pressure on the Eastern Front from Soviet forces and, after June of 1944, from Allied forces advancing through France. As such, the Italian Campaign played an important role in stretching Nazi German military resources to their breaking point.
Third, the Italian Campaign demonstrated the cost and difficulty of fighting a major land campaign against well-organized defenses in difficult terrain. The fighting in Italy was among the most grueling of the entire European Theater, and the campaign resulted in heavy casualties on both sides. For instance, Allied forces suffered approximately 320,000 casualties during the course of the Italian Campaign, while some historians have suggested that Nazi German and Italian forces suffered nearly 1,800,000 casualties.
