Tolong jelaskan mengenai Studi militer dari Oliver Cromwell

Durston, Christopher (2000). "'Settling the Hearts and Quieting the Minds of All Good People': the Major-generals and the Puritan Minorities of Interregnum England", in History 2000 85(278): pp. 247–267,  . Full text online at Ebsco.

Durston, Christopher (1998). "The Fall of Cromwell's Major-Generals", in English Historical Review 1998 113(450): pp. 18–37,

Firth, C.H. (1921). Cromwell's Army Greenhill Books,

Gillingham, J. (1976). Portrait of a Soldier: Cromwell Weidenfeld & Nicholson,

Kenyon, John & Ohlmeyer, Jane (eds.) (2000). The Civil Wars: A Military History of England, Scotland, and Ireland 1638–1660 Oxford University Press,

Kitson, Frank (2004). Old Ironsides: The Military Biography of Oliver Cromwell Weidenfeld Military,

Marshall, Alan (2004). Oliver Cromwell: Soldier: The Military Life of a Revolutionary at War Brassey's,

McKeiver, Philip (2007). "A New History of Cromwell's Irish Campaign", Advance Press, Manchester,

Woolrych, Austin (1990). "The Cromwellian Protectorate: a Military Dictatorship?" in History 1990 75(244): 207–231, . Full text online at Wiley Online Library.

Woolrych, Austin (1990). "Cromwell as a soldier", in Morrill, John (ed.), Oliver Cromwell and the English Revolution Longman,

Young, Peter and Holmes, Richard (2000). The English Civil War, Wordsworth,