sentences:  Solemn Engagement
  
  The Solemn Engagement ("A Solemne Engagement of the Army, under the Command of his Excellency Sir Thomas Fairfax") was a declaration to the English House of Commons adopted unanimously by the General Council of the Army commanded by Thomas Fairfax at Newmarket on 29 May 1647.Acting in response to a parliamentary threat of disbandment, the document asserted that the army would not disband until satisfactory terms were negotiated.