Engineer Henry A. Henri, the son of Lieutenant Alphonso Henri (see Lot 220), was Mentioned in Despatches by Captain William Peel, V.C., C.B., 'for rendering valuable assistance and being present in all the main actions fought by the men of H.M.S. Shannon'.
Thus it would be fair to conclude that he was present in the action at Khajwa on 1.11.1857, the relief of the Residency at Lucknow, the defence of Cawnpore in late November 1857, the defeat of the Gwalior Contingent in the following month and the final capture of Lucknow in March 1858. A fellow Shannon Officer, Edmund Verney, later wrote:

'Our Engineers, Mr. Bone and Mr. Henri, have been of the greatest possible service, sighting our guns as accurately as rifles and most zealously giving their whole energies to promoting the efficiency of our Battery' (The Devil's Wind refers).

Verney goes on to record Captain Peel's observations on these much improved ex-Bengal Artillery 24-pounders.

'It should not be said of these guns that one can shoot with them as well as a rifle, but rather that one can shoot with a rifle as well as them'.