You will be given a definition of a task first, then some input of the task.
Generate a correct and concise answer for the question based on the words in the context.

Context : Michael Osborne Waddell MC (22 December 1922 - 22 May 2015) was a British Army officer of the 50th Royal Tank Regiment who won an immediate Military Cross for his actions during the invasion of Sicily in 1943 when he saved the lives of eleven men after his column was hit by enemy fire.
Question : Which military branch is Michael Osborne Waddell a part of?
Output:
British Army