Civil War 1642 and 1651
Called the English Civil War normally, it affected 'England' at the time which was England and Wales as we know it today. Conflicts also spread to Scotland, Ireland and the Channel Islands.
http://en.wikipedia.org/wiki/English_civil_war
Memorials found in Bristol.

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For photos of the above street (now known as Christmas Steps) see http://www.davenapier.pwp.blueyonder.co.uk/brispics/xmaspic2.htm

(Copyright A. Jones/GPCA)

(Copyright A. Jones/GPCA)
http://www.davenapier.pwp.blueyonder.co.uk/brispics/xmaspic3.htm
Henry Washington Memorial

(Copyright A. Jones/GPCA)
Bust of Oliver Cromwell at the V and A Museum

(Copyright A. Jones/GPCA)