June 27 in History

King George II led his British and allied troops to victory against the French at Dettingen in Bavaria, personally directing the battle on horseback at age 60. No British monarch has commanded troops in the field since, making Dettingen the end of a martial tradition stretching back to the medieval kings who fought alongside their armies.

The British walked straight into it. Colonel Archibald Montgomery led 1,600 redcoats through a narrow mountain pass near Echoee in June 1760, convinced the Cherokee were retreating. They weren't. Attakullakulla's warriors had chosen the ground carefully — dense forest, high ridges, nowhere to run. The ambush shredded Montgomery's advance. He pulled back to Charleston and never returned. Britain's Cherokee allies became Britain's Cherokee enemies. And the frontier war that followed helped fracture colonial confidence in British military protection long before anyone said the word independence.

Sherman thought a frontal assault would crack them. It didn't. On June 27, 1864, he threw 16,000 Union soldiers straight at Confederate positions dug into Kennesaw Mountain's rocky slopes — and lost nearly 3,000 men in under three hours. Johnston's Confederates, entrenched and patient, barely moved. But Sherman learned almost nothing from it. He went right back to flanking maneuvers, forced Johnston to abandon the mountain anyway, and took Atlanta two months later. The assault that looked like Sherman's worst mistake barely slowed him down.

The locomotive that pulled the Royal Blue out of Washington that day wasn't steam. It was electric — and that shocked almost everyone watching. The B&O had quietly wired the Baltimore tunnel, a stretch too smoky and dangerous for conventional engines, and on February 27, 1895, the Royal Blue glided through it without a cough. Engineer after engineer had dreaded that tunnel. Now it was just a tunnel. But steam still dominated for decades after. The electric moment everyone expected to spread? It barely did. Progress rarely arrives on schedule.

Cheatham Hill was a slaughterhouse. On June 27, 1864, Union General William T. Sherman sent roughly 8,000 men straight into Confederate entrenchments there — a frontal assault so costly it became known as the "Dead Angle." Nearly 3,000 Union casualties in a single morning. Sherman called it a mistake almost immediately. The Illinois Monument, dedicated in 1914 by survivors who'd actually been there, marks the spot where Illinois regiments bled hardest. But here's the thing: Sherman lost the battle and still took Atlanta ninety days later.

Five years of dredging, pouring, and hauling produced a 1,056-meter concrete causeway connecting two worlds. The Johor–Singapore Causeway wasn't just an engineering project — it was a political bet. British colonial planners needed rubber and tin moving faster from Malayan plantations to Singapore's port. Workers from India and China built it with their hands. Trains crossed first. Then cars. Then everything. Today it's one of the busiest border crossings on earth. But here's the reframe: they built it to serve an empire that would collapse within thirty years.

The document that nearly started a war was probably fake. Tanaka Giichi held his Eastern Conference in 1927, mapping out Japan's ambitions in Manchuria and China. Then a supposed secret memo surfaced — the "Tanaka Memorial" — outlining a brutal blueprint for Asian conquest, attributed directly to him. China used it as proof of Japanese aggression. Western powers cited it. Historians repeated it for decades. But most scholars now believe it was fabricated, possibly by Chinese nationalists. The real plans were aggressive enough. Japan didn't need anyone to invent worse ones.

Tanaka Giichi spent eleven days in 1927 mapping Japan's ambitions in China. But the conference's strangest legacy wasn't the strategy — it was a document nobody can prove existed. The Tanaka Memorial, allegedly a secret blueprint for world domination, surfaced afterward claiming to reveal Japan's true imperial master plan. Problem: historians now believe it was forged. Didn't matter. China and the West cited it for decades as proof of Japanese intent. A fabricated document shaped real foreign policy. The lie outlasted the truth.