Sidi Barrani in the context of Sidi

Marmarica (Ancient Greek: Μαρμαρική, Arabic: مراقيه, romanized: Maraqiyah) in ancient geography was a littoral area in Ancient Libya, located between Cyrenaica and Aegyptus. It corresponds to what is now the Libya and Egypt frontier, including the towns of Bomba (ancient Phthia), Timimi (ancient Paliurus), Tobruk (ancient Antipyrgus), Acroma (ancient Gonia), Bardiya, As-Salum, and Sidi Barrani (ancient Zygra). The territory stretched to the far south, encompassing the Siwa Oasis, which at the time was known for its sanctuary to the deity Amun. The eastern part of Marmarica, by some geographers considered a separate district between Marmarica and Aegyptus, was known as Libycus Nomus. In late antiquity, Marmarica was also known as Libya Inferior, while Cyrenaica was known as Libya Superior.

Libya is found in Africa and is located west of the Nile, more precisely west of the mouth of the Nile at Canopus. The Periplus of Pseudo-Scylax names the Adyrmachidae as the first people of Libya (Africa).Marmarica proper was delimited towards the east by the escarpment of Catabathmus Magnus, now known as Akabah el-Kebir, at Salum.

The Italian invasion of Egypt (Operazione E) was an offensive in the Second World War from Italian Libya, against British, Commonwealth and Free French in the neutral Kingdom of Egypt. The invasion by the Italian 10th Army (10ª Armata) ended border skirmishing on the frontier and began the Western Desert Campaign (1940–1943) proper. The Italian strategy was to advance from Libya along the Egyptian coast to seize the Suez Canal. After numerous delays, the scope of the offensive was reduced to an advance as far as Sidi Barrani and the defeat of any British forces in the area.

The 10th Army advanced about 65 mi (105 km) into Egypt against British screening forces of the 7th Support Group (7th Armoured Division) the main force remaining in the vicinity of Mersa Matruh, the principal British base in the Western Desert. On 16 September 1940, the 10th Army halted and took up defensive positions around the port of Sidi Barrani. British casualties were 40 men killed and the Italians suffered 120. The army was to wait in fortified camps, until engineers had built the Via della Vittoria (Victory Road) along the coast, an extension of the Libyan Via Balbia. The Italians began to accumulate supplies for an advance against the 7th Armoured Division and the 4th Indian Division at Mersa Matruh, about 80 mi (130 km) further on.

The North African campaign of World War II took place in North Africa from 11 June 1940 to 13 May 1943, fought between the Allies and the Axis powers. It included campaigns in the Libyan and Egyptian deserts (Western Desert campaign, Desert War), in Morocco and Algeria (Operation Torch), and in Tunisia (Tunisia campaign). The Allied war effort was dominated by the British Commonwealth and exiles from German-occupied Europe. The United States entered the war in December 1941 and began direct military assistance in North Africa on 11 May 1942.

Fighting in North Africa started with the British raids on Italian Libya on 11 June 1940 after Italy's entry into the Second World War on the German side. On 14 June, the British 11th Hussars and part of the 1st Royal Tank Regiment, (1st RTR) crossed the border from Egypt into Libya and captured Fort Capuzzo. This was followed by an Italian counter-offensive into Egypt and the capture of Sidi Barrani in September. The British recaptured Sidi Barrani in December during Operation Compass. The Italian 10th Army was destroyed and the German Afrika Korps was dispatched to North Africa in February 1941 in Operation Sonnenblume to reinforce the Italians and prevent an Axis defeat.

The Via della Vittoria was a military road between Bardia in Italian Libya and Sidi Barrani in western Egypt.

Operation Compass (also Italian: Battaglia della Marmarica) was the first large British military operation of the Western Desert Campaign (1940–1943) during the Second World War. British metropolitan, Imperial and Commonwealth forces attacked the Italian and Libyan forces of the 10th Army (Marshal Rodolfo Graziani) in western Egypt and Cyrenaica, the eastern province of Libya, from December 1940 to February 1941.

The Western Desert Force (WDF) (Lieutenant-General Richard O'Connor) with about 36,000 men, advanced from Mersa Matruh in Egypt on a five-day raid against the Italian positions of the 10th Army, which had about 150,000 troops in fortified posts around Sidi Barrani in Egypt and in Cyrenaica to the west. The WDF swiftly defeated the Italians in their fortified posts and at Sidi Barrani, forced the rest of the 10th Army out of Egypt and captured the ports along the Cyrenaican coast in Libya. The 10th Army was cut off as it retreated towards Tripolitania at the Battle of Beda Fomm, the remnants being pursued to El Agheila on the Gulf of Sirte.