Piers gained a commission in the 9th Lancers, and served with distinction in the Indian Mutiny, 1857-59.
He resigned his army commission on his marriage to Mary Godman.
He was living at Broadwell Parish, Broadwell, Gloucestershire, at the time of the 1881 Census.
Piers and Mary were active in church work, and took a special interest in the welfare of the local children. Another of their interests was the care and conditions of the local inmates of the local Workhouse Institute.
Piers held a commission of the peace and was also a Justice of the Peace.
He died without issue in May 1904, and was buried at Broadwell Church.
His memorial at St Paul's Church, Broadwell, Gloucestershire, reads:
"To the glory of God and in loving memory of Piers Thursby of Broadwell Hill, J.P. Gloucestershire. Born 30 Nov. 1834. Died May 1904. Son of Revd. W. Thursby of Ormerod House, Lancashire. Late Cap. 9th Lancers with whom he served during the Indian Mutiny 1857-59 was present at the siege and taking of Lucknow, Capture of Bareilly, actions at Shahjehanpore, Shumshabad and other engagements."