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 <answer>to ensure the MoD operates effectively as a department of the government</answer>.
What is the role of the Permanent Secretary?
to ensure the MoD operates effectively as a department of the government