North African campaign in the context of "Operation Sonnenblume"

The military history of the United Kingdom in World War II covers the Second World War against the Axis powers, starting on 3 September 1939 with the declaration of war by the United Kingdom and France, followed by the UK's Dominions, Crown colonies and protectorates on Nazi Germany in response to the invasion of Poland by Germany. There was little, however, the Anglo-French alliance could do or did do to help Poland. The Phoney War culminated in April 1940 with the German invasion of Denmark and Norway. Winston Churchill became prime minister and head of a coalition government in May 1940. The defeat of other European countries followed – Belgium, the Netherlands, Luxembourg and France – alongside the British Expeditionary Force which led to the Dunkirk evacuation in June 1940.

Britain and its Empire continued the war against Germany. Churchill engaged industry, scientists and engineers to advise and support the government and the military in the prosecution of the war effort. Germany's planned invasion of the UK was averted by the Royal Air Force denying the Luftwaffe air superiority in the Battle of Britain, and by its marked inferiority in naval power. Subsequently, urban areas in Britain suffered heavy bombing during the Blitz in late 1940 and early 1941. The Royal Navy sought to blockade Germany and protect merchant ships in the Battle of the Atlantic. The Army counter-attacked in the Mediterranean and Middle East, including the North-African and East-African campaigns, and in the Balkans.

Anti-tank warfare refers to the military strategies, tactics, and weapon systems designed to counter and destroy enemy armored vehicles, particularly tanks. It originated during World War I following the first deployment of tanks in 1916, and has since become a fundamental component of land warfare doctrine. Over time, anti-tank warfare has evolved to include a wide range of systems, from handheld infantry weapons and anti-tank guns to guided missiles and air-delivered munitions.

Anti-tank warfare evolved rapidly during World War II, leading to infantry-portable weapons.

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.

The Indian Army (IA) (ISO: Bhāratīya Sēnā) is the land-based branch and largest component of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Army, and its professional head is the Chief of the Army Staff (COAS). The Indian Army was established on 1 April 1895 alongside the long established presidency armies of the East India Company, which too were absorbed into it in 1903. Some princely states maintained their own armies which formed the Imperial Service Troops which, along with the Indian Army formed the land component of the Armed Forces of the Crown of India, responsible for the defence of the Indian Empire. The Imperial Service Troops were merged into the Indian Army after independence. The units and regiments of the Indian Army have diverse histories and have participated in several battles and campaigns around the world, earning many battle and theatre honours before and after Independence.

The primary mission of the Indian Army is to ensure national security and national unity, to defend the nation from external aggression and internal threats, and to maintain peace and security within its borders. It conducts humanitarian rescue operations during natural calamities and other disturbances, such as Operation Surya Hope, and can also be requisitioned by the government to cope with internal threats. It is a major component of national power, alongside the Indian Navy and the Indian Air Force. The independent Indian army has been involved in four wars with neighbouring Pakistan and one with China. It has emerged victorious in all wars against Pakistan. Other major operations undertaken by the army include Operation Vijay, Operation Meghdoot, and Operation Cactus. The army has conducted large peacetime exercises such as Operation Brasstacks and Exercise Shoorveer, and it has also been an active participant in numerous United Nations peacekeeping missions. The Indian Army was a major force in the First and Second World Wars, particularly in the Western Front and the Middle Eastern theatre during World War I, and the South-East Asian Theatre and the East African and North African campaigns during World War II.

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.

Haganah (Hebrew: הַהֲגָנָה ha-Haganah, lit. 'The Defense') was the main Zionist paramilitary organization that operated for the Yishuv in the British Mandate for Palestine. It was founded in 1920 to defend the Yishuv's presence in the region, and was formally disbanded in 1948, when it became the core force integrated into the Israel Defense Forces shortly after the Israeli Declaration of Independence.

Formed out of previous existing militias, Haganah's original purpose was to defend Jewish settlements against Arab attacks; this was the case during the 1921 Jaffa riots, the 1929 Palestine riots, the 1936 Jaffa riots, and the 1936–1939 Arab revolt in Palestine, among others. The paramilitary was under the control of the Jewish Agency, the official governmental body in charge of Palestine's Jewish community during the British era. Until the end of World War II, Haganah's activities were moderate, in accordance with the strategic policy of havlagah (lit. 'self-restraint'), which caused the breakaway of the more radical paramilitaries: Irgun and Lehi. Haganah militants received clandestine military support from Poland and sought cooperation with the United Kingdom in the event of an Axis-led invasion of Palestine through North Africa, prompting the creation of the Palmach, their elite fighting force, in 1941.

The Western Desert campaign (Desert War) took place in the deserts of Egypt and Libya and was the main theatre in the North African campaign of the Second World War. Military operations began in June 1940 with the Italian declaration of war and the Italian invasion of Egypt from Libya in September. Operation Compass, a five-day raid by the British in December 1940, was so successful that it led to the destruction of the Italian 10th Army (10ª Armata) over the following two months. Benito Mussolini sought help from Adolf Hitler, who sent a small German force to Tripoli under Directive 22 (11 January). The Afrika Korps (Generalleutnant Erwin Rommel) was formally under Italian command, as Italy was the main Axis power in the Mediterranean and North Africa.

In the spring of 1941, Rommel led Operation Sonnenblume, which pushed the Allies back to Egypt except for the siege of Tobruk at the port. At the end of 1941, Axis forces were defeated in Operation Crusader and retired again to El Agheila. In early 1942 Axis forces drove the Allies back again, then captured Tobruk after the Battle of Gazala but failed to destroy their opponents. The Axis invaded Egypt and the Allies retreated to El Alamein, where the Eighth Army fought two defensive battles, then defeated the Axis forces in the Second Battle of El Alamein in October 1942. The Eighth Army drove Axis forces out of Libya to Tunisia, which was invaded from the west by the Allied First Army in Operation Torch. In the Tunisian campaign the remaining Axis forces surrendered to the combined Allied forces in May 1943.

The Indian Legion (German: Indische Legion), officially the Free India Legion (German: Legion Freies Indien) or 950th (Indian) Infantry Regiment (German: Infanterie-Regiment 950 (indisches)), was a military unit raised during the Second World War initially as part of the German Army and later the Waffen-SS from August 1944. Intended to serve as a liberation force for British-ruled India, it was made up of Indian prisoners of war and expatriates in Europe. Owing to its origins in the Indian independence movement, it was known also as the "Tiger Legion", and the "Azad Hind Fauj". As part of the Waffen-SS it was known as the Indian Volunteer Legion of the Waffen-SS (German: Indische Freiwilligen Legion der Waffen-SS). The transfer to the Waffen-SS was never fully executed and many members of the division refused to wear the new uniforms and insignia.

Indian independence leader Subhas Chandra Bose initiated the legion's formation, as part of his efforts to win India's independence by waging war against Britain, when he came to Berlin in 1941 seeking German aid. The initial recruits in 1941 were volunteers from the Indian students resident in Germany at the time, and a handful of the Indian prisoners of war who had been captured during the North African campaign. It later drew a larger number of Indian prisoners of war as volunteers.

The Panzer I was a light tank produced by Nazi Germany in the 1930s. Its name is short for Panzerkampfwagen I (German for "armored fighting vehicle mark I"), abbreviated as Pz.Kpfw. I. The tank's official German ordnance inventory designation was Sd.Kfz. 101 ("special purpose vehicle 101").

Design of the Panzer I began in 1932 and mass production began in 1934. Intended only as a training tank to introduce the concept of armored warfare to the German Army, the Panzer I saw combat in Spain during the Spanish Civil War, in Poland, France, the Soviet Union and North Africa during the Second World War, and in China during the Second Sino-Japanese War. Experiences with the Panzer I during the Spanish Civil War helped shape the German Panzerwaffe's invasion of Poland in 1939 and France in 1940. By 1941, the Panzer I chassis design was used as the basis of tank destroyers and assault guns. There were attempts to upgrade the Panzer I throughout its service history, including by foreign nations, to extend the design's lifespan. It continued to serve in the Spanish Armed Forces until 1954.

The Mediterranean Theater of Operations, United States Army (MTOUSA), originally called the North African Theater of Operations, United States Army (NATOUSA), was a military formation of the United States Army that supervised all U.S. Army forces which fought in North Africa and Italy during World War II.

United States Army operations in the theater began with Operation Torch, when Allied forces landed on the beaches of northwest Africa on 8 November 1942, and concluded in the Italian Alps some 31 months later, with the German surrender in Italy on 2 May 1945. For administrative purposes, U.S. components were responsible to Headquarters North African Theater of Operations, United States Army (NATOUSA), which was created 14 February 1943. NATOUSA was redesignated Mediterranean Theater of Operations, United States Army (MTOUSA), on 26 October 1944.