In the aftermath of the second English Civil War, the New Model Army moved to eliminate political resistance to putting the king on trial. Troops stood at the entrance to the House of Commons and barred roughly 140 MPs sympathetic to a negotiated peace, an event later called 'Pride's Purge.' The remaining 'Rump Parliament' pushed forward with the unprecedented trial of a reigning monarch.
By December 1648 England had fought two civil wars and still could not settle the fundamental question of what to do with a king who kept negotiating in bad faith. The army, radicalized by years of fighting and unpaid wages, had lost patience with a Parliament still inclined to compromise with Charles I. On December 6th and in the days following, soldiers under Colonel Thomas Pride physically blocked MPs from entering the chamber, arresting some and turning away dozens more.
What remained—derisively nicknamed the Rump Parliament—was a body purged of moderates and stacked with men willing to do what had never been done in English history: put a king on trial for his life. The purge itself culminated and solidified through mid-December as the army consolidated control over the legislative process, ensuring no vote could reverse course.
The consequences unfolded with startling speed. Within weeks a specially convened High Court of Justice would convict Charles of treason against his own people, and by January 30, 1649, his head would roll on a scaffold outside Whitehall. It was a revolution improvised in real time, and it left England without a monarch for eleven years.
Key people: Charles I, Thomas Pride, Oliver Cromwell