This work investigates the political transformation of the New Model Army during the English Civil War and its role in challenging the established authority of Parliament. Austin Woolrych, a distinguished historian of the seventeenth century, utilizes primary source records from the General Council of the Army to analyze the internal debates between soldiers and officers. He argues that the army functioned as a radical political entity that sought a constitutional settlement, ultimately suggesting that the conflict with King Charles I was not an inevitable path to regicide but a series of missed diplomatic opportunities.

Historians and scholars of the English Civil War recognize this text as a definitive account of the political radicalization within the New Model Army. Readers frequently note the academic density of the prose, which provides a rigorous examination of the constitutional crises of the 1640s.