Starting in the Mediterranean Sea, on January, 1943, the nations started to plan their event, in which they would start to drive Germany from northern Italy and the Soviet Union. Beginning with Operation Husky, the Allies invaded Sicily, as to derive the Germans up to Salerno. The 45th Infantry of the United States was tasked with this operation. This operation would start from July 10, 1943 to July 25. After Mussolini's arrest on July 24, the Allies invaded the rest of Italy, which took about two years to accomplish. This plan to liberate Italy was called Operation Avalanche. They were forced to endure a long standoff against the Germans, who defended themselves on the Italian peninsula.
After Sicily would be defeated, the Allies opened the northern front of Normandy, also known as D-Day. This would eventually lead to the Battle of the Buldge, in which Allies campaigned in Belgium and France, as well as confronting German Panzer tanks. This battle lasted from December 16, 1944, to January 25, 1945.
One of the major battles fought by Canada was named the Battle of Ortona, from December 17 1943 to December 27. During this conflict, the Canadians had to march towards the German's next river, the Moro, in which the Germans built defenses on. Later the Germans made a stand on port town, Ortona. When the Canadians arrived on Ortona, the Germans surprised them with a heavy defense, in which the Allies later named the location, "The Gully." For the Canadians, due to the Germans street war strategy, they used "mouseholding" tactics (bombing sides of buildings to clear Germans) to eventually secure more land by December 27.
Operations including Monte Cassino and the Battle of Anzio would play an important role in the War, in which most of Italy would be rid of German soldiers. Although, these conflicts would last for months, due to the German's heavy defenses in local towns and mountain regions.
Before the 1945 victory, the Allies continued to push back the Germans up to northern Italy. This would lead to the execution of Benito Mussolini by the partisans, and the Germans surrendering to the Allies in Italy.
After the Battle in Anzio, resulting in 59,000 American causalities and the liberation of Rome. The final assault on Italy would be called Operation Grapeshot, in which the Allies (from April 9 - May 2, 1945) were tasked to push the German tanks towards Bologna, and did so. During this time, the fifth Army of the U.S made way to the Italo - French border, and ordered bombers to continue their campaign in Italy. The Allies eventually defeat the German forces, when the British accept the German's defeat in southern Italy by May 2, 1945.