bably remained there till a truce was concluded between this power and its belligerent neighbours, the Poles, in 1618. Returning to England, he again procured letters from King James, and repaired to the camp of Sigismund III, King of Poland—the enemy against whom he had lately striven—with the view of aiding that monarch in his war against the Turks. In this service he consequently witnessed the total overthrow of the Moslem army. With Christopher Radzivill, general-in-chief of the Lithuanian forces, he served throughout the war, attending the invasion of Livonia by Gustavus Adolphus, in 1621; and as a proof of his meritorious services obtained from that general letters testimonal, dated at Vilna, 1 Jan. 1623, in which his military bearing is highly extolled, especially in recovering the castle of Mittivia, which had been captured by the Swedes. For this and other services Sigismund, in a deed dated 23 April 1625, granted him a yearly pension of 700 florins. Upon peace being restored in 1631 to the dominions of Sigismund, Lieutenant-colonel Aston, for he had now attained that rank, once more returned to England.
Having raised here a regiment of native soldiers, he again departed for the continent. Once more he drew his sword in the service of a former adversary. Joining Gustavus Adolphus with his newly raised company, he attended that celebrated commander in his expedition against the Austrian Count Tilly, and probably throughout that splendid campaign which terminated on the plain of Lützen.
At the commencement of the Scottish rebellion he returned home with as many soldiers of note as he could bring with him. On 8 April 1640 he was appointed by the Earl of Northumberland sergeant-majorgeneral of the regiments under Viscount Conway, then lying at Newcastle, and, after the rout at Newburn, retired with that body first to Durham, and then into Yorkshire. On Northumberland's sickness, the command of the army devolving on the Earl of Strafford, he was by that nobleman appointed (7 Sept.) colonel-general of one of the brigades serving against the Scots, who now occupied Newcastle; and on the 17th of the same month sergeant-major of the newly raised train-bands of Yorkshire, in which capacity he served until the return home of the Scots and the disbandment of the English army.
Dodd relates (Church History, iii. 57) that on the breaking out of the civil war Sir Arthur Aston—who had been knighted on 15 Feb. 1640-1—'offered his services to King Charles, but was refused; his majesty alleging that the cry of popery already ran so high against him that it would certainly inflame matters if he admitted so many persons of that communion. Afterwards, as 'tis said, Sir Arthur, by way of tryal, made the same offer to Sir Thomas Fairfax, general of the parliament's forces, who immediately embraced it. The king, being made acquainted with this passage, not only granted a commission to Sir Arthur, but gave a general invitation to all other catholics to come in to him.' The appointment he received was that of colonel-general of the dragoons, with which regiment he did his majesty good service at Edgehill, beating off the field the right wing of the parliamentary army.
Upon the king's removal to Oxford from Reading (21 Nov. 1642), where he had lain since the attack on Brentford, he left Sir Arthur, who had now succeeded Mr. Wilmot as commissary-general of the horse, governor of that town, with a garrison of about three thousand foot, and a regiment of horse of about as many hundreds. Whilst governor of Reading he hanged one or two of his own men who had been guilty of some notorious crimes, 'to stop the mouths of the people,' said a contemporary journalist, 'for his murdering Master Boys, an honest citizen of London, by a seeming act of justice.' In the 'Weekly Intelligencer' (No. 18) it is stated that this Boys, who was executed in the town, was suspected of being a spy.
During the siege of Reading he three times repulsed the parliament forces under the Earl of Essex; but afterwards, whilst standing under a shed near the enemy's approaches, he received an injury on the head, occasioned by the fall of a tile—an accident which deprived him of his senses for the remainder of the siege. Accordingly, he resigned the command to Colonel Richard Fielding, the senior officer of the garrison. Clarendon, speaking of this accident, says that it 'was then thought of great misfortune to the king, for there was not in his army an officer of greater reputation, and of Avhom the enemy had a greater dread,' The siege terminated on 27 April 1643, by the garrison evacuating the town with the honours of war. Sir Arthur, in a horse-litter, led the procession, which made for Wallingford, and the next day joined the king at Oxford. Sir Arthur's wound did not long deprive the king of his assistance; for on 27 July following he came post from Bristol—at the taking of which city he was probably present—to the king at Oxford, informing him of the state of things in the west. In the following month, at the particular request of the queen, who resided in the city, and who imagined herself safer under the protection of a catholic, he
