The shortest war in history was over before 10 a.m.: Britain and Zanzibar fought for roughly 40 minutes on August 27, 1896.

On August 27, 1896, Britain and the Sultanate of Zanzibar fought a war that lasted roughly 40 minutes, making it the shortest armed conflict in recorded history.

The whole thing was finished before most people would sit down to lunch. At 9 a.m. on August 27, 1896, British warships in the harbor of Zanzibar opened fire on the Sultan's palace. Somewhere between 38 and 45 minutes later, the shooting stopped, the palace was in ruins, and a new sultan more agreeable to Britain was on his way to power. Guinness World Records, which lists it as the shortest war on record, gives the times as 9:00 a.m. to 9:45 a.m. — 45 minutes.

Why did Britain bombard Zanzibar in the first place?

Zanzibar in the 1890s was a British protectorate in all but name, and Britain expected to approve who sat on its throne. When the pro-British Sultan Hamad bin Thuwaini died suddenly on August 25, 1896, his cousin Khalid bin Barghash seized the palace and declared himself sultan without London's blessing. The British consul, Basil Cave, issued an ultimatum: stand down by 9 a.m. on the 27th or face the guns.

Khalid did not stand down. He barricaded himself in the palace with a defending force of several thousand and a scattering of artillery, including an old bronze cannon and a royal yacht armed for the occasion. When the deadline passed, the Royal Navy squadron in the harbor — including the cruisers HMS *St George* and HMS *Racoon* — began firing. The palace, built largely of wood, could not survive a naval bombardment. Within the hour it was collapsing and burning, and Khalid had fled to the German consulate.

The Historical Association, in its 2014 account of the war, put the cost starkly: more than 500 of the Sultan's defenders were killed, against a single British marine wounded. That lopsidedness is the real story of the shortest war — it was less a contest than a demonstration of what a colonial navy could do to a wooden building in under an hour.

How do we know how long it actually lasted?

Here is where the crisp Guinness figure gets slippery. No one was standing over the harbor with a stopwatch, and the historical record disagrees with itself. The Historical Association writes that the bombardment ended "38, or 40, or 43 minutes later, depending on which source you believe." Justin and Stephanie Pollard, writing in *History Today* in 2018, settled on roughly 38 minutes. Atlas Obscura, surveying the scholarship in 2016, noted that historians generally cite something in the range of 38 to 45 minutes and that "no definitive timing exists."

The reason for the fuzziness is almost too neat. Zanzibar's town clocktower — one of the few reliable public timepieces that might have fixed the moment the guns fell silent — was itself among the targets shelled during the bombardment. The instrument that could have timed the war became a casualty of it.

So the "45 minutes" you'll see quoted is really Guinness's tidy bracketing of a start and stop, not a measured duration. It's accurate as a record entry and slightly too confident as history. The honest answer is "about 40 minutes, give or take a few."

The vivid detail that survives is the ending itself: Khalid escaping through the smoke to claim asylum under the German flag, while the harbor still smelled of cordite and the palace burned behind him. He would live in exile for years before the British finally captured him in 1916.

What remains open to argue is not whether this was the shortest war — nothing shorter is documented — but exactly how short. Was it 38 minutes, or 43, or the 45 that Guinness prints? The clock that could have told us was blown apart in the fighting, which means the shortest war in history may also be the one whose length we can never quite pin down.