Given the task definition and input, reply with output. Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Context: Sir Charles Abraham Elton, 6th Baronet (31 October 1778 -- 1 June 1853) was an English officer in the British Army and an author.
Question: What military branch was Charles Abraham Elton in?
british army