Brigadier Thomas Maxwell's Regiment of Dragoons had a colonel, lieutenant-colonel, major, ten captains, twelve lieutenants, eleven cornets, eight quarter-masters, and an adjutant. There were twelve companies and 649 men (Brit. Mus. list). Avaux gives 360 men. Singer's Correspondence of Lord Clarendon enumerates twelve companies with 600 men (ii. 512). Cf. Somers State Tracts, xi. 399.
Brigadier Thomas Maxwell was unable to oppose the landing of Schomberg at Bangor and was present at the battle of the Boyne and at the siege of Limerick. He advised the Duke of Berwick to agree to send a deputation to Louis and to send with it a secret agent of his own explaining the Anglo-Irish standpoint. The Duke sent Maxwell, who gave his own version of the situation to Louis, and his gloss was accepted. A sergeant and ten men from his regiment behaved with the utmost gallantry at the Bridge of Athlone. Maxwell gave up his sword to Mackay when he entered the breach in the wall at Athlone. According to Macariae Excidium and the Light to the Blind, Maxwell had an understanding with Ginkell. Colonel O' Kelly did not like him; for he was a friend of Tyrconnel. After 1691 he went to France and Louis gave him the command of the Royal regiment, and he perished at the battle of Marsaglia, 1693. There are references to him in the Avaux negotiations: Avaux to Louvois, August 14, August 30, September 4; Avaux to Louis, October 21; Avaux to Louvois, November 26; Avaux to Seignelay, December 6.