1663
The King of France having, after the treaty of the Pyrenees, placed his army upon a peace establishment, the strength of Douglas' Regiment was reduced to eight companies of one hundred men each.
1665
1666
Three years after its return to France, a war broke out between England and Holland; and in the succeeding year Louis XIV. took part with the Dutch against England, when Douglas' regiment was again ordered to quit the French service, and to return to England: it accordingly landed at Rye, in Sussex, on the 12th of June, 1666, and mustered eight hundred men.[50]
The Roman Catholics in several counties in Ireland were, at this period, in a state of insurrection; and in a short time after the arrival of the regiment from France, it was ordered to proceed to Ireland, where it appears to have remained upwards of twelve months.
1668
1670
After the conclusion of the peace of Breda in 1668, the insurrections in Ireland having been suppressed, the regiment was again sent to France; and in an order issued by Louis XIV. in 1670, respecting the rank of regiments, it appears one of the first.[51]
1672