King George Declares War: Rebellion Begins

King George III delivered his Proclamation of Rebellion before the Court of St. James's, formally declaring the American colonies in open revolt and commanding all loyal subjects to suppress the insurrection. The speech eliminated any remaining diplomatic path to reconciliation and committed Britain to a military campaign that would last eight years. The proclamation came in response to the battles at Lexington, Concord, and Bunker Hill, which had made continued pretense of peace impossible. George III declared the colonists had "proceeded to open and avowed rebellion" and ordered civil and military authorities to suppress the revolt and punish the treasonous. The language was absolute: there would be no negotiation with rebels. This hardened stance had consequences the King did not anticipate. Many colonists who had hoped for reconciliation with the Crown, including moderates in the Continental Congress, were pushed toward independence by the proclamation's uncompromising tone. When the document reached America in November 1775, it strengthened the hand of radicals like John Adams and Thomas Paine, whose Common Sense, published two months later, argued that monarchy itself was the problem. The proclamation also authorized the hiring of foreign mercenaries, eventually bringing 30,000 Hessian troops to fight in America, a decision that further alienated colonial opinion. Historians consider the Proclamation of Rebellion one of the key miscalculations that transformed a tax dispute into a war for independence.