Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Q: Context : General Sir Alexander Frank Philip Christison, 4th Baronet GBE, CB, DSO, MC & Bar (17 November 1893 -- 21 December 1993) was a British Army commander of the Second World War.
Question : What army did Philip Christison serve in?
A:
British Army