In Edmund Blunden's "Pill Box" two sergeants he served with in the 11th Battalion of the Royal Sussex Regiment. are mentioned by name. My impression is that this a rare occurrence.
In the poem, one of the NCOs is fatally wounded and a second unsuccessfully urges his mate to fight through. The wounded sergeant is Frank Albert Hoad of Eastbourne, who was killed in action 3 September 1916 somewhere along the Menin Road. His friend was Sergeant Frank Worley, DCM, of Sussex, who continued to serve with the distinction and survived the war, albeit with a case of shell shock. Worley and Blunden remained lifetime friends. On the occasion of his death in 1954 Blunden wrote a second poem in tribute to his friend. About the same time he wrote another piece mentioning Worley and some additional sergeants whose actual existence I've not been able to confirm: It's clear, Blunden, unlike some junior officers I've known, fully appreciated to dedication and critical role sergeants play in any military organization or operation.
Where are the sergeants, passed beyond?:
Unsted the quick-moving, clear-eyed Marshall,
Great-hearted Worley of Worthing the pride,
My Wally Ashford astute and impartial
Seall of the runners, and Luck who plied
With the rations up through the wild night-tide.: