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 : The Bullet is Not for Firing is the fourth episode of the third series of the British comedy series Dad's Army that was originally transmitted on Thursday 2 October 1969.
Question : What series is the episode The Bullet is Not for Firing part of?
Output:
Dad's Army