August 27 in History

Ishida Mitsunari's Western Army besieged Fushimi Castle, defended by a small Tokugawa garrison under the veteran commander Torii Mototada, who fought to the death to buy his lord time. The ten-day siege delayed the western coalition's advance long enough for Tokugawa Ieyasu to consolidate his forces, setting up the decisive confrontation at Sekigahara.

The Portuguese governor of Timor abandoned the capital Dili and fled to the offshore island of Atauro as rebel forces seized control of the territory. Portugal's retreat from its last Asian colony created a power vacuum that Indonesia exploited within months, launching a military invasion and 24-year occupation that killed an estimated 100,000 to 180,000 Timorese.

The Persians had invaded Greece twice before Plataea. At Marathon, Athens stopped them alone. At Thermopylae, a small Spartan force held long enough for the fleet to retreat. On August 27, 479 BC, the Greek alliance faced Mardonius's Persian army outside the ruins of Plataea. The Persian cavalry was neutralized. Mardonius was killed. The army collapsed. On the same day, across the Aegean, the Persian fleet was defeated at Mycale. Both victories on the same day. The Persian threat to Greece was over.

The combined Tang Chinese and Silla Korean fleets crushed the Baekje-Japanese alliance on the Geum River, destroying over 400 ships and ending Japan's first attempt to project military power onto the Korean peninsula. The defeat reshaped East Asian geopolitics for centuries, as Japan turned inward and did not attempt another Korean invasion until the 1590s.

Shikken Hojo Yasutoki promulgated the Goseibai Shikimoku on August 27, 1232, establishing Japan's first written legal code specifically for the samurai class. This document replaced arbitrary feudal customs with clear statutes, securing the Hojo clan's authority while defining the warrior ethos that would dominate Japanese society for centuries.

The Formulary of Adjudications — Goseibai Shikimoku — was a 51-article legal code issued by Hojo Yasutoki in 1232, the first comprehensive written law for Japan's warrior class. It established procedures for land disputes, punishments for violence, inheritance rules, and standards for judicial behavior. The imperial court in Kyoto had its own legal system. This was separate, specifically for samurai society, written in plain Japanese rather than Chinese. It governed the warrior class for over 400 years, long after the Hojo regents who wrote it had lost power.

The allied Aragonese and Venetian fleets crush the Genoese navy at Alghero, capturing most enemy ships and securing dominance in the Mediterranean. This decisive victory ends Genoa's naval ambitions in the region and solidifies Aragonese control over Sardinia for decades to come.

A Japanese fleet of 500 ships annihilates Joseon commander Wŏn Kyun's force of 200 vessels at Chilcheollyang, shattering the Korean navy's last major offensive capability. This crushing defeat forces Wŏn Kyun to surrender his command and effectively ends Joseon's ability to challenge Japanese naval dominance during the Imjin War.

The Battle of Long Island was the largest battle of the American Revolution, and Washington nearly lost his entire army in it. British forces under Howe outflanked the American position through Jamaica Pass, which Washington had left almost unguarded. By the end of August 27, 1776, the Americans were pinned against Brooklyn Heights with the East River behind them. Howe stopped rather than pressing the attack. Overnight, Washington evacuated 9,000 men across the river in the dark and the fog, without the British realizing. The army survived. The retreat was as impressive as any victory.

The 1st Maryland Regiment launched repeated charges against a vastly larger British army at the Battle of Long Island, buying precious time for General Washington to evacuate his forces. This desperate stand prevented total annihilation and preserved the Continental Army, ensuring the Radical War continued rather than ending in defeat on that August day.