Field Marshal Sir George Pollock, Bt., GCB, GCSI (1786-1872) was commissioned into the Bengal Artillery in 1803. He was present at the siege of Bharatpur (1805) and later took part in the Nepal War (1814-16) and Anglo-Burmese War (1824-26). He is best known for his role in the First Afghan War (1839-42). After the massacre of the withdrawing British and Indian troops and their families in the Khyber Pass during the winter of 1841, he came to the aid of the garrison at Jallalabad, defeating an enemy of 10,000 with the loss of just 135 of his own men. The wife of the commander of the garrison was amongst those rescued and a copy of her journal is included in the Raglan collection (part of lot 223).
It is possible that this sword was acquired by Pollock during that campaign though it is difficult to be specific.