General Sir Allen Bayard Johnson KCB (2 May 1829 – 7 February 1907) was a senior British Indian Army officer who went on to be Military Secretary to the India Office.

Johnson was commissioned into the 5th Bengal Native Infantry in 1846.

[1] He served in the Second Anglo-Burmese War in 1853 and took part in the fighting at Donabew and the capture of Pegu[1] and went on to serve with the Jaunpur Field Force during the repression of the Indian Mutiny being present at the Capture of Lucknow in 1857.

[1] He was appointed Military Secretary to the India Office in 1877.

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