Six centuries of imperial rule that, at its height, controlled territory across the Balkans, the Middle East, and North Africa — from Osman I's small frontier principality around 1299, through the epochal 1453 conquest of Constantinople that ended Byzantium, Suleiman the Magnificent's 16th-century golden age, a long 19th-century decline as "the sick man of Europe," and final collapse after World War I, when the 1922–23 abolition of the sultanate and caliphate made way for the modern Republic of Turkey.
This empire is the ruling context behind dozens of other pages in this atlas — the Balkans, the Levant, the Arabian Peninsula, the Caucasus, Egypt, and North Africa all spent centuries under Ottoman rule, usually appearing there only as brief mentions. Here, that history gets its own real timeline. This page hands off to turkey-flags.html for the post-1923 story of the modern Turkish republic.
Scope of this page: the Ottoman state itself, c. 1299–1923, told as one continuous political lineage from its founding as a small Anatolian beylik to its formal abolition. Real, well-documented flags exist for most of this span — plain-colored battle standards in the earlier centuries, giving way to the crescent-and-star pattern that becomes standardized by the 19th century. Part of a larger atlas — see the map and linked pages at the bottom.
Six centuries of extent, snapshotted
Not an internal political split — the Ottoman state was always one government — but its own real territorial reach, growing from a single Anatolian beylik to a multi-continental empire and back down to Anatolia alone, shown as a handful of simplified extent snapshots. Press play, or drag the slider.
These are approximate extent snapshots, not surveyed borders. A precise year-by-year Ottoman frontier would need dozens of maps; this compresses six centuries into the same six eras already used in the timeline below, anchored on modern Turkey's own real traced coastline as the one constant core.
c. 1299
Founding beylik under Osman I
Anatolia traced from real public coastal-vertex data (modern Turkey's own border); the Balkans, Levant/Egypt/North Africa, and Arabia extent overlays are simplified schematic approximations, not surveyed historical frontiers.
the Republic of Turkey is founded — see turkey-flags.html
1922 – 1923
Abolition of the sultanate and caliphate
DissolvedMehmed VISunni Islam (Ottoman Caliphate)
Migration & conquest:Emigration: Greek-Turkish population exchange (1923)
Who & why: defeated in World War I and facing the Allied-backed partition Treaty of Sèvres, Mustafa Kemal (later Atatürk) leads a nationalist resistance that wins the Turkish War of Independence. The Grand National Assembly formally abolishes the Ottoman sultanate on 1 November 1922, proclaims the Republic of Turkey on 29 October 1923, and abolishes the caliphate itself in March 1924, ending over six centuries of Ottoman rule.
What it represents: the closing point of this page's arc. The modern Republic of Turkey that succeeds the Ottoman state, keeping a close variant of its crescent-and-star flag, is covered on its own page in this atlas.
Paint guide
ProportionsN/A — transition marker, not an emblem of its own.
the standardized red crescent-and-star flag — still Turkey's flag today
1844 – 1922
Decline & the standardized flag
Empire, decliningAbdulmejid ISunni Islam (Ottoman Caliphate)
Migration & conquest:Immigration: Circassian & Caucasus refugees (1860s–70s)Immigration: Balkan & Crimean Muslim refugees (Muhacirs)Emigration: Armenian Genocide diaspora (1915–17)
Ruling house:House of Osman
Who & why: the empire enters a long era of territorial loss and internal reform (the Tanzimat, from 1839) as nationalist uprisings peel away Balkan territories through the 19th century and Western powers increasingly dominate its finances — the source of the era's grim nickname, "the sick man of Europe." The empire allies with Germany in World War I and is defeated, triggering the Allied occupation and partition plans that provoke the Turkish nationalist response.
What it represents: the plain red field with a white crescent moon and five-pointed star is formally standardized as the empire's flag in 1844, the clearest and most recognizable Ottoman banner — a design so enduring it passes essentially unchanged to the modern Turkish republic.
Paint guide
ProportionsStandardized 2:3, formalized 1844.
LayoutRed field, white crescent moon (open toward the fly), white five-pointed star.
Red#E30A17
White#F4EFE1
plain red crescent battle standard, the empire's height and long plateau
1517 – 1844
Imperial height under Suleiman & long plateau
Empire, imperial heightSelim ISunni Islam (Ottoman Caliphate)
Who & why: Selim I's 1516–17 conquest of the Mamluk Sultanate brings Egypt, the Levant, and the Islamic holy cities under Ottoman control, and his son Suleiman the Magnificent (r. 1520–1566) pushes the empire to its greatest extent — deep into Hungary, across North Africa, and throughout the Arabian Peninsula's coastlines — while overseeing a golden age of law, architecture, and administration. The empire remains a dominant Mediterranean and Middle Eastern power for the following two-plus centuries even as its relative strength against a modernizing Europe slowly erodes.
What it represents: the plain red field with a white crescent becomes the empire's most widely used naval and military banner through this long span, predating the fixed 1844 standardization but recognizably the same core design.
Paint guide
ProportionsNo single fixed ratio before 1844; shown at 2:3.
LayoutRed field, white crescent moon, no star in earlier variants.
Red#E30A17
White#F4EFE1
the plain red imperial banner, Constantinople's new capital
1453 – 1517
Conquest of Constantinople & a new capital
Empire, imperial capitalMehmed II (the Conqueror)Sunni Islam
Migration & conquest:Immigration: Sephardic Jews expelled from Spain (1492)Emigration: Byzantine Greek scholars to Italy (post-1453)
Ruling house:House of Osman
Who & why: Sultan Mehmed II ("the Conqueror") takes Constantinople on 29 May 1453 after a seven-week siege, ending the Byzantine Empire for good and making the city the Ottomans' new imperial capital, soon renamed Istanbul in common usage. The following decades see rapid consolidation across the Balkans and Anatolia, and Selim I's later conquests bring the Islamic caliphal title itself under Ottoman claim by 1517.
What it represents: a plain red field remains the dominant Ottoman battle-standard color through this consolidation period, with the crescent motif already in wide but not yet fully standardized use — the imperial color inherited in part from earlier Turkic and Byzantine red-field traditions in the region.
Paint guide
ProportionsNo fixed ratio recorded for this period.
LayoutPlain red field, no fixed emblem yet standardized.
Red#E30A17
plain green battle standard, rapid frontier expansion under early sultans
1362 – 1453
Rapid frontier expansion
Principality, expandingMurad ISunni Islam
Migration & conquest:Immigration: Anatolian Turkish colonists into the Balkans (sürgün)
Ruling house:House of Osman
Who & why: Murad I takes the title of sultan and crosses into the Balkans, capturing Adrianople (Edirne) around 1362 and making it a new forward capital; victory at Kosovo (1389) cements Ottoman dominance over Serbia. Bayezid I besieges Constantinople itself but is defeated and captured by Timur (Tamerlane) at Ankara in 1402, triggering a decade-long "Ottoman Interregnum" civil war among his sons before Mehmed I reunifies the state by 1413, setting up the eventual conquest of Constantinople two generations later.
What it represents: green battle standards, carrying strong Islamic religious association, are widely used alongside red ones in this expansionary era, before the red-crescent combination that later defines the empire becomes dominant.
Paint guide
ProportionsNo fixed ratio recorded for this period.
LayoutPlain green field, crescent motif in informal, inconsistent use.
Green#0F6B3C
White#F4EFE1
placeholder — Osman I's small frontier beylik, no fixed banner survives
c. 1299 – 1362
Founding beylik under Osman I
Principality, foundingOsman ISunni Islam
Ruling house:House of Osman
Who & why: Osman I leads a small Turkish frontier principality (beylik) in northwestern Anatolia, traditionally dated from around 1299, one of many rival Turkic beyliks left in the wake of the Seljuk Sultanate of Rum's collapse. His successor Orhan captures the Byzantine city of Bursa in 1326, making it the young state's first real capital and setting the House of Osman on the path to become one of history's longest-ruling and most expansive dynasties.
What it represents: no securely documented single banner survives from this earliest frontier-principality period — shown here honestly blank, consistent with this atlas's treatment of other genuinely undocumented founding eras.
Paint guide
ProportionsN/A — no attested flag for this earliest period.
Reading the tags
Principality, founding — a small frontier beylik, pre-imperial
Empire, declining / dissolved — territorial loss through final abolition
Leader — the named ruler most associated with the era's start
State religion — the official/established faith, not the population's
More of the atlas
This page is one lineage in a larger set. The modern Republic of Turkey that succeeds the Ottoman state continues on its own page. See the region-wide empires hub and the other pages here: