To accomplish this they demanded that every soldier sign a declaration of loyalty, both to Fairfax and the commander-in-chief, and the Army Council, which signified that they accepted the Heads of the Proposals as the Army's manifesto. Many of the men were willing to sign, even if they had Leveller sympathies, because Cromwell and Fairfax promised that Parliament would honour the back payments they were owed. It was suggested that if they did not sign then the army could not present a united front to Parliament and payment could be delayed and that some regiments might be disbanded with no back pay at all. The declaration was a politically astute move because the soldiers were now bound to the Army Council and not the King or Parliament.
Two regiments turned up without orders to do so. They carried copies of the Agreement of the People and stuck pieces of paper in their hatbands with the legend England's Freedom, Soldiers' Rights which was a Levellers' slogan. Colonel Thomas Harrison's regiment of horse arrived first. Fairfax succeeded in talking the mutinous regiment around and they agreed to sign. Colonel Robert Lilburne's regiment of foot arrived a little later. (Robert was the brother of John Lilburne, a famous agitator). They stoned and wounded one of Fairfax's officers when he approached them. With sword drawn Cromwell and some of his officers rode into their ranks and ordered them to take the papers from their hats. Cromwell had eight or nine of the more truculent of Lilburne's troopers arrested. They were tried at an improvised court-martial and found guilty of mutiny. Three ringleaders were sentenced to death and, having cast lots, Private Richard Arnold was shot on the spot as an example.
At the other two rendezvous, at Ruislip Heath and Kingston, the other regiments were ordered to show support for Fairfax which they all agreed to do. Thus the army remained under the control and intact, so it was able to take the field when in July 1648 the Second English Civil War started.
The next Leveller mutiny in the New Model Army was the Bishopsgate mutiny in April 1649.