The humble petition of many officers lately drawne from the army for the service of Ireland, : in the behalfe of themselves, and their souldiers, to His Excellency Sir Thomas Fairfax Knight, Captaine Generall of the army raised by authority of both Houses of Parliament. Shewing the reasons why, and how they were drawne off. With a vindication of themselves against the scandals raised by some of his Excellencies army since their drawing off. Also, a letter annexed from the Generall to the severall regiments inducing them to engage in that honourable and just warre.