Italian campaign (World War II) in the context of "Bombing of Rome in World War II"

The Allied invasion of Italy was the Allied amphibious landing on mainland Italy that took place from 3 September 1943, during the Italian campaign of World War II. The operation was undertaken by General Sir Harold Alexander's 15th Army Group (comprising General Mark W. Clark's American Fifth Army and General Bernard Montgomery's British Eighth Army) and followed the successful Allied invasion of Sicily. A preliminary landing in Calabria (Operation Baytown) took place on 3 September, the main invasion force landed on the west coast of Italy at Salerno on 9 September as part of Operation Avalanche at the same time as a supporting operation at Taranto (Operation Slapstick).

The M18 Hellcat (officially designated the 76 mm Gun Motor Carriage M18 or M18 GMC) was a tank destroyer used by the United States Army in World War II and the Korean War. Despite being equipped with the same main gun as some variants of the much larger Sherman tank, the M18 attained a much higher top speed of up to 55 mph (89 km/h) by keeping armor to a minimum, and using the innovative Torqmatic automatic transmission.

The M18 Hellcat was the culmination of the development of various prototypes of fast tank destroyers dating back to 1941. Entering production in summer 1943, the M18 first saw combat service in spring 1944. The M18 served primarily in Western Europe, but was also present in smaller numbers in Italy and the Pacific. Production continued until October 1944, with 2,507 built.

The Allied invasion of Sicily, also known as the Battle of Sicily and Operation Husky, was a major campaign of World War II in which Allied forces invaded the Italian island of Sicily in July 1943 and took it from the Axis forces defended by the Italian 6th Army and the German XIV Panzer Corps. It paved the way for the Allied invasion of mainland Italy and initiated the Italian campaign that ultimately removed Italy from the war.

With the conclusion of the North Africa campaign in May 1943, the victorious Allies had for the first time ejected the Axis powers from an entire theatre of war. Now at Italy's doorstep, the Allied powers—led by the United States and United Kingdom—decided to attack Axis forces in Europe via Italy, rather than western Europe, due to several converging factors, including wavering Italian morale, control over strategic Mediterranean sea lanes, and the vulnerability of German supply lines along the Italian peninsula.

5th Gorkha Rifles (Frontier Force), also abbreviated as 5 GR(FF) and previously 5th Royal Gurkha Rifles (Frontier Force) is an infantry regiment of the Indian Army comprising Gurkha soldiers of Nepalese origin. It was formed in 1858 as part of the British Indian Army.The regiment's battalions served in the First World War (Mesopotamia) and Second World War (Anglo-Soviet invasion of Iran, Mediterranean, Italian campaign, and in Burma).

The regiment was known as the 5th Royal Gurkha Rifles (Frontier Force) when it was one of the Gurkha regiments that was transferred to the Indian Army following the independence of Indian and Pakistan in 1947 and given its current name in 1950.

The Western Front was a military theatre of World War II encompassing Denmark, Norway, Luxembourg, Belgium, the Netherlands, the United Kingdom, France, and Germany. The Italian front is considered a separate but related theatre. The Western Front's 1944–1945 phase was officially deemed the European Theater by the United States, whereas Italy fell under the Mediterranean Theater along with the North African campaign. The Western Front was marked by two phases of large-scale combat operations. The first phase saw the capitulation of Luxembourg, Netherlands, Belgium, and France during May and June 1940 after their defeat in the Low Countries and the northern half of France, and continued into an air war between Germany and Britain that climaxed with the Battle of Britain. The second phase consisted of large-scale ground combat (supported by a massive strategic air war considered to be an additional front), which began in June 1944 with the Allied landings in Normandy and continued until the defeat of Germany in May 1945 with its invasion.

Mark Wayne Clark (1 May 1896 – 17 April 1984) was a United States Army officer who fought in World War I, World War II, and the Korean War. He was the youngest four-star general in the U.S. Army during World War II.

During World War I, he was a company commander and served in France in 1918, as a 22-year-old captain, where he was seriously wounded by shrapnel. After the war, the future US Army Chief of Staff, General George C. Marshall, noticed Clark's abilities. During World War II, he commanded the United States Fifth Army, and later the 15th Army Group, in the Italian campaign. He is known for leading the Fifth Army when it captured Rome in June 1944, around the same time as the Normandy landings. He was also the head of planning for Operation Torch, the largest seaborne invasion at the time.

The Eighth Army was a field army of the British Army during the Second World War. It was formed as the Western Army on 10 September 1941, in Egypt, before being renamed the Army of the Nile and then the Eighth Army on 26 September. It was created to better control the growing Allied force based in Egypt and to direct its efforts to lift the siege of Tobruk via Operation Crusader.

It later directed Allied forces through the remaining engagements of the Western Desert campaign, oversaw part of the Allied effort during the Tunisian campaign and finally led troops throughout the Italian campaign. During 1943, it made up part of the 18th Army Group before being assigned to the 15th Army Group (later, the Allied Armies in Italy).

The 2nd Polish Corps (Polish: 2 Korpus Polski), 1943–1947, was a major tactical and operational unit of the Polish Armed Forces in the West during World War II. It was commanded by Lieutenant General Władysław Anders and fought with distinction in the Italian Campaign, in particular at the Battle of Monte Cassino. By the end of 1945, the corps had grown to well over 100,000 soldiers.