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The Year 1778 — Newsroom
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Valley Forge Encampment Ends
On June 19, 1778, the Continental Army departed Valley Forge, Pennsylvania, ending a transformative six-month winter encampment (December 19, 1777–June 19, 1778). Approximately 11,000 soldiers had ...
June 19, 1778
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Military Events
Valley Forge Encampment Ends
On June 19, 1778, the Continental Army departed Valley Forge, Pennsylvania, ending a transformative six-month winter encampment (December 19, 1777–...
Political Events
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Treaty of Alliance with the Delaware Nation (Septemb...
The September 17, 1778 Treaty of Alliance between the United States and the D...
Diplomatic Intelligence & Espionage Networks of 1778
The year 1778 witnessed the consolidation of American intelligence operations...
Britain Declares War on France
On March 17, 1778, the British government formally declared war on France, es...
Articles of Confederation Ratification (1778)
The ratification of the Articles of Confederation in 1778 represented the Con...
Military Events
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Battle of St. Lucia (December 1778)
The Campaign for St. Lucia from December 14–28, 1778 represents the first maj...
Battle of Ushant (1778)
The Battle of Ushant (also known as the First Battle of Ushant) was fought on...
George Rogers Clark's Illinois Campaign (1778)
The Illinois Campaign of 1778 was a Virginia militia expedition into the Brit...
War of the Bavarian Succession
The War of the Bavarian Succession (1778–1779) was a conflict between Prussia...
Science & Discovery
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Total Solar Eclipse of June 24, 1778
A total solar eclipse crossed North America on June 24, 1778—the first total ...
Captain Cook's Discovery of Hawaii
Captain James Cook, commanding HMS *Resolution* and HMS *Discovery* on his th...
Death of Carl Linnaeus
Carl Linnaeus, the Swedish naturalist and botanist who revolutionized biologi...
Scientific Instruments and Methods in 1778
By 1778, European natural philosophers had at their disposal a sophisticated ...
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Military Events
Battle of St. Lucia (December 1778)
Dec 15
Key Figures
Joseph Banks (1743–1820)
Nov 30
Political Events
Treaty of Alliance with the Delaware Natio...
Sep 17
Political Events
Diplomatic Intelligence & Espionage Networ...
Sep 14
Arts & Culture
La Scala Opens in Milan
Aug 03
Military Events