 On arrival at Portsmouth only 137 other ranks out of an establishment strength of 790 were fit for duty, though officer strength was almost up to strength.Recovery took a long time and after a brief period in Suffolk the regiment spent three years in the Scottish Highlands and five years in Ireland before sailing for North America in 1768.The first posting for the 64th in America was Boston, at the time a centre of discontent and an unhappy posting as a result.