The idea of using the Irish army in Great Britain originated with Charles himself. In July 1638 he inquired what help he might expect in the event of an outbreak in Scotland. Wentworth answered that he had only 2000 foot and 600 horse, and that it would not be safe to send away any, especially since the Ulster Scots undoubtedly sympathised with their countrymen. He would have Charles trust his English subjects, but could only recommend the most ruthless repression for Scotland. Leith might be permanently fortified and garrisoned at the expense of the Scots 'till they had received our common prayer-book used in our churches of England without any alteration, the bishops settled peaceably in their jurisdiction,' and English law substituted for Scotch. For his own part he could only propose to concentrate a large part of his small army in north-east Ulster. At the King's suggestion he raised 400 additional horse, a troop of 110 cuirassiers being given to Ormonde as the man in Ireland most able and willing to maintain them effectively. Money was sent to Holland to provide arms for the new men, and the equipment of the foot was also much improved. On October 22 Charles wrote to propose that Wentworth should provide a garrison of 500 men for Carlisle, and also some cannon if they could be spared from Ireland. The business was taken in hand at once, Sir Francis Willoughby, governor of Galway, being selected to command the expedition. The pay in Ireland was sixpence a day, in England eightpence, and Wentworth asked that they might be paid on the higher scale after crossing the channel. Charles promised, but could not perform this, though he did give some money by way of bounty, and in June 1641 the regiment was back in Ireland, and their pay heavily in arrear. Willoughby had been forty years a soldier, twenty-five in the Netherlands, and his experience at Carlisle confirmed him in the opinion that the discipline of great garrisons was best maintained by paying the men well and punishing their misdemeanours.[248] [Sidenote: Nucleus of the new Irish army.]