Of 500 men who tried to swim across the Lough only one survived. McCarthy, the Jacobite commander, along with about 400 Jacobite officers were captured and later exchanged for Williamite prisoners; the other Jacobites were killed. These claims seem unlikely for several reasons each Irish regiment included approximately 40 officers. The entire force therefore would have included only approximately 200 officers. Many of these officers are accounted for in an October 1689 roll call which shows approximately 15-20% change in the officer roll call since July for the infantry regiments and 5% for the dragoons. This would total some 20-30 officers in total. Also, the Mountcashel regiment who's roll call for October shows that companies which would normally have 50-60 men had around 25 which would result in a loss of approximately 300-400 men for this regiment. The Cotter and Clare dragoons who rode away from the battle did not have significant losses, based on the October 1689 roll call. Assuming the other two infantry regiments suffered similar losses would give a total loss of 1200 - 1300. Given their officers are recorded in the October roll and they show less losses than the Mountcashel regiment among officers there may have been less losses in the ranks also. The Williamite histories acknowledge they captured approximately 400 including men who were later sent to Derry, which would give a loss of killed, wounded and missing of 800-900 and likely less. This number is necessarily an estimate based on the available data but should be contrasted with Williamite claims that they killed and drowned 2000. It appears likely that a couple hundred men of Mountcashel's regiment may have fled into the bogs toward Lough Erne and some of them who made it to the river tried to swim and were drowned leading to the story of the hundreds drowned. Mountcashel was wounded by bullet and narrowly avoided being killed. He later escaped from Enniskillen and returned to lead the Irish Brigade in the French army. The Williamite victory at Newtownbutler ensured that a landing by the Duke of Schomberg in County Down in August 1689 was unopposed. The battle is still commemorated by the Orange Order celebrated in Northern Ireland, and is mentioned in the traditional unionist song, "The Sash". The Battle is significant in another way in that the regiments on both sides went on to have long and famous histories on the Williamite side - the Innsikilling Regiment 27th foot and on the Jacobite side the Clare and Mountcashel/Lee/Bulkeley regiments of the Irish Brigade.