[2] Her father was an officer in the Royal Naval Reserve, and her brother served in the British Army for 16 years.

[3] Following university and Sandhurst,[2] she was commissioned a second lieutenant in the Royal Corps of Signals on 11 July 1991, with seniority in that rank from 5 August 1989.

[2] She was promoted to captain on 1 April 1995,[7] to major on 30 September 2000,[8] and to lieutenant colonel on 30 June 2008.

[19] She was appointed Master of Signals on 1 October 2020, succeeding Lieutenant General Sir Nick Pope.

[27] In May 2024, it was announced that Nesmith would be appointed the next Vice-Chief of Defence Staff in succession to Gwyn Jenkins, and would thus become the first woman to hold the rank of general in the British Army and therefore the highest-ranked female officer in British history.

[29] Between 1995 and 2000,[7][8] Sharon Patricia Moffat married Walker Nesmith, a tree surgeon.