The regiment remained in garrison at Meerut until October 1918 when it exchanged stations with 21st (Empress of India's) Lancers and moved to Risalpur. On 2 May 1919 Afghan troops seized control of wells on the Indian side of the border. The Afghan Amir Amanullah was warned to withdraw, but his answer was to send more troops to reinforce those at the wells and to move other Afghan units to various points on the frontier. The regiment was mobilised on 6 May and formed part of the British Indian Army's 1st (Risalpur) Cavalry Brigade. It served throughout the Third Anglo-Afghan War and saw action at the Khyber Pass. At Dakka - a village in Afghan territory, north west of the Khyber Pass - on 16 May, the regiment made one of the last recorded charges by a British horsed cavalry regiment as it was already apparent the old world would be giving way to mechanisation.