Flags of Algeria

People's Democratic Republic of Algeria

Who & why: the Algerian War of Independence (1954–1962), fought by the National Liberation Front (FLN) against French rule, is one of the 20th century's most significant and costly decolonization conflicts — marked by guerrilla warfare, the Battle of Algiers, and widespread civilian suffering on both sides before the March 1962 Évian Accords and a nearly unanimous July 1962 independence referendum end 132 years of French control.

What it represents: the green-and-white flag with a red crescent and five-pointed star, used by the FLN and Algerian nationalists since the 1930s–40s, becomes the flag of the new republic at independence and remains unchanged since.

French Algeria

Who & why: France invades and captures Algiers in July 1830, beginning a conquest that takes decades to complete against sustained resistance, notably Emir Abdelkader's campaigns through the 1830s–40s. Unlike most French colonial holdings, Algeria is organized from 1848 into departments administered as an extension of metropolitan France itself, with large-scale European settlement. That status holds until the Algerian War of Independence (1954–1962), a real and violent conflict fought by the FLN against French rule, ends in independence.

What it represents: Wikipedia says the official flag was the French flag (the invasion began under the white Bourbon flag and the tricolour was adopted during the campaign), that a striped merchant/naval ensign was used 1848-1910 with exact rules unknown, and that green-and-white star-and-crescent nationalist flags were used from the 1930s and in 1945. This corrects the earlier statement that the tricolour was the sole flag; the sources read do not address Algeria's legal status as French soil.

Regency of Algiers (Ottoman)

Who & why: the corsair brothers Oruç and Hayreddin Barbarossa establish Ottoman authority over Algiers in the 1510s–20s, and the regency becomes a largely autonomous military state under a Ottoman-appointed dey, its economy long built around Mediterranean corsair activity, before falling to French invasion in 1830.

What it represents: Wikipedia, citing al-Jilali, says plain red flags 'devoid of any symbol' were the main emblem of the Regency, unlike Ottoman flags with a crescent and star, with a green, yellow and red tricolour reported for 1516 and a red, yellow and green striped flag in a 1551 atlas; its list of flags gives a solid red flag for the Dey and red-and-yellow striped Odjak flags. Flags of the World instead says that apart from the deys' personal standards the flag in use was the Ottoman flag, and that ship flags before 1830 were white over black. The two sources disagree, so the Ottoman red field with a white crescent and star drawn here is unconfirmed.

Berber and Arab dynasties of the central Maghreb

Who & why: the territory of present-day Algeria passes across these centuries through Zirid and Hammadid Berber rule, brief Almohad unification with Morocco and Tunisia, and finally the Zayyanid dynasty of Tlemcen, an independent Berber kingdom that holds much of western Algeria from the 1230s until Ottoman conquest absorbs it in the 1500s.

What it represents: no single flag can honestly represent six centuries and several distinct ruling dynasties across this territory; heraldic banners of this era are poorly attested. Shown here honestly blank rather than invented.

Numidia, Rome & the Arab Conquest

Who & why: Massinissa unifies the Berber kingdom of Numidia in 202 BCE after siding with Rome against Carthage at the Battle of Zama; his descendants rule as Roman allies and occasional rivals (most famously Jugurtha, who fights Rome to a standstill for years before his defeat) until Julius Caesar annexes Numidia as a province after Thapsus in 46 BCE. Roman rule gives way to the Vandal Kingdom after Genseric's invasion in 429 CE, then to a Byzantine reconquest under Justinian's general Belisarius in 534; Umayyad Arab armies finally complete the conquest of the region by the early 8th century over sustained Berber resistance, and by 776 the Rustamid Ibadi imamate is founded at Tahert, opening the sequence of Berber and Arab dynasties covered in the next entry.

What it represents: no flag survives from Numidian, Roman, Vandal, or Byzantine rule over this territory, and the Berber resistance under Kahina is described only in later Arab chronicles without enough detail to reconstruct a banner. Shown here honestly blank rather than invented.

World context: Massinissa's Numidia takes shape in the immediate aftermath of Rome's climactic defeat of Hannibal at Zama; three and a half centuries later, Roman Numidia produces Augustine of Hippo, whose Confessions and City of God (written after Rome itself was sacked by the Visigoths in 410 CE) become foundational texts of Western Christian thought. The Arab conquest of the 7th–8th centuries runs alongside the broader Umayyad expansion that also reaches Spain by 711 and the height of Tang-dynasty China.