American War of Independence (1775-1783): timeline, battles, and the Franco-American alliance

1. Introduction

The American War of Independence (1775-1783) pitted the British Thirteen Colonies in North America against the Crown of Great Britain. The conflict grew out of a political and fiscal crisis: after the Seven Years' War (1756-1763), London sought to finance its debt by taxing colonists without granting them representation in Parliament. Protests (Stamp Act, Boston Tea Party) escalated into armed violence in April 1775.

On July 4, 1776, the Continental Congress adopted the Declaration of Independence, largely drafted by Thomas Jefferson. George Washington commanded the Continental Army, supported by local militias and, from 1778 onward, by a French expedition under Rochambeau. The strategic turning point came at Saratoga (1777), which convinced Versailles to sign an alliance. Cornwallis's surrender at Yorktown (October 1781), made possible by de Grasse's naval blockade, ended major operations. The Treaty of Paris (1783) recognized U.S. sovereignty.

This guide is for readers interested in Franco-American history. It draws on verifiable sources: the National Park Service, National Archives, Library of Congress, Mount Vernon, Naval History and Heritage Command, and the French National Archives.

2. Context and the revolutionary spark

After 1763, the British Parliament imposed a series of taxes (Stamp Act, Townshend Acts) to fund colonial administration and troops stationed in America. Colonists invoked the principle no taxation without representation: they refused to be governed without elected representatives at Westminster.

• 1765: Stamp Act, first major mobilizations (Sons of Liberty).
• 1770: Boston Massacre, five dead, tension at its peak.
• 1773: Boston Tea Party, destruction of tea cargoes.
• 1774: Intolerable Acts, colonial boycott, First Continental Congress.
• April 1775: Lexington and Concord, open hostilities begin.

3. Timeline (1763-1783)

Filter events by camp: United States, Great Britain, France, or neutral context.

4. Battle map and commentary

New England and Middle Colonies

After Lexington, the British tried to isolate the rebellion in Boston (Bunker Hill). In 1776, Howe drove Washington from New York and Philadelphia. Victories at Trenton and Princeton restored morale. Saratoga (1777) broke the British strategy of splitting the colonies in two.

Southern theater and Yorktown

From 1778 onward, Cornwallis waged a war of movement in South Carolina. Kings Mountain and Cowpens reversed the momentum. Greene used attrition tactics (Guilford Courthouse). In 1781, the Franco-American convergence and de Grasse's blockade trapped Cornwallis at Yorktown.

5. Forces comparison (order of magnitude)

6. Battles table

7. Franco-American treaty of 1778

Signed on February 6, 1778 in Paris, the diplomatic package includes a treaty of amity and commerce and a military alliance treaty. France recognizes the United States and pledges to defend their territories. In return, the Americans promise not to conclude a separate peace with London and guarantee favorable commercial rights for French vessels.

8. France's decisive role

Without French intervention, the insurgents would have struggled to achieve a decisive victory. Versailles provided credit, supplies (cannon, ships, powder), and professional troops. Key figures include Count Rochambeau, Admiral de Grasse, Lafayette (volunteer from 1777), and Minister Vergennes.

• 1777: Lafayette joins Washington at Valley Forge.
• 1778: d'Estaing operates in the West Indies and at Savannah.
• 1780: Rochambeau lands at Newport (Rhode Island).
• 1781: joint march toward Virginia, siege of Yorktown.
• 1781: de Grasse blocks Chesapeake Bay (September 5).

9. PDF guide download

10. Gallery and tactical cooperation

The Yorktown victory illustrates Franco-American interoperability: Continental infantry, Rochambeau's French troops, artillery and engineers, and de Grasse's fleet. This coordination remains a model studied in military academies.

11. Verified historical anecdotes

Twenty-one short notes, each linked to an institutional source.

12. Franco-American heritage

The 1778 alliance founded a century of complex but symbolically strong diplomatic relations. Lafayette embodies the cultural bridge between the two nations; his later visits to the United States (1784, 1824-1825) drew enthusiastic crowds documented by Mount Vernon and American archives.

In 1780, Lafayette wrote to Washington to salute the "combined army" taking shape. This correspondence, preserved in the Library of Congress Madison/Washington papers, reflects mutual trust without attributing any apocryphal quotation.

Today, the NPS maintains commemorative sites on both sides of the Atlantic. The Washington-Rochambeau Revolutionary Route links Boston to Yorktown and reminds us that American independence was a collective enterprise, with the French contribution remaining central in French and American historical teaching.

13. Frequently asked questions

14. Official sources and resources for further reading

15. Summary PDF

Download the summary sheet: key dates, battles, 1778 treaty, French role, and official links.