[2] The regiment was sent to join the Duke of York's army in the Netherlands in 1794 as part of the unsuccessful defence of that country against the Republican French during the Flanders Campaign.

[3] The regiment embarked for Portugal in 1811 for service under Viscount Wellington in the Peninsular War.

[5] Under the command of Colonel William Thornton, the regiment accompanied by detachments from the Royal Navy and Royal Marines,[6][7][8] carried out a successful attack on the American positions on the west bank of the Mississippi River during the Battle of New Orleans in January 1815.

[2] After that it transferred to Gibraltar and became the 85th, or The King's Regiment of Light Infantry (Bucks Volunteers) in August 1827.

[3] After returning to India, it took part in operations against the Zaimukhts and was involved in the destruction of their capital, Zawa, in 1879.

[5] As part of the Cardwell Reforms of the 1870s, where single-battalion regiments were linked together to share a single depot and recruiting district in the United Kingdom, the 85th was linked with the 52nd (Oxfordshire) Regiment of Foot, and assigned to district no.