The regiment sustained severe loss from the climate of the West India Islands during the period it was employed there; and in 1774 it returned to England much reduced in numbers.
1775
1776
During the year 1775 the regiment was employed recruiting its numbers in England, and in 1776 it marched to Scotland.
1778
The regiment was stationed in Scotland until the early part of the year 1778, when it embarked for North America, and was employed in that part of the British dominions during the remainder of the American war, which commenced in 1775, and ended in 1782.
Lieut.-General Trapaud was removed in 1778 to the fifty-second regiment, and was succeeded in the colonelcy of the SEVENTIETH by Major-General William Tryon, from major in the first foot guards.
1779
1780
The battalion companies of the regiment were stationed in the northern provinces of America; but the flank companies were detached southward.
1781
In 1781 the regiment was stationed in Nova Scotia, and it remained in that country during the two following years.