Context: The Ministers and Chiefs of the Defence Staff are supported by a number of civilian, scientific and professional military advisors. The Permanent Under-Secretary of State for Defence (generally known as the Permanent Secretary) is the senior civil servant at the MoD. His or her role is to ensure the MoD operates effectively as a department of the government.

Question: Who is supported by civilian, scientific, and professional military advisors?
Answer: The Ministers and Chiefs of the Defence Staff

Question: What is the Permanent Under-Secretary of State for Defence generally known as?
Answer: Permanent Secretary

Question: Where does the Permanent Secretary serve as the senior civil servant?
Answer: MoD

Question: What is the role of the Permanent Secretary?
Answer: to ensure the MoD operates effectively as a department of the government

Question: Who supports the Permanent Secretary?
Answer: Unanswerable

Question: What is another name for the Minister of the Defense?
Answer: Unanswerable

Question: What is the role of the Chief of Defence?
Answer: Unanswerable

Question: Where does the Minister of Defence serve as the senior civil servant?
Answer: Unanswerable

Question: What does the Chief of Defense do?
Answer: Unanswerable