Armed forces
The Armed Forces are responsible for the defence of the UK's territory and interests by land, air and sea in times of peace and war.
The Army, Royal Navy and Royal Air Force have also played a crucial role in times of environmental and humanitarian disasters and in peacekeeping roles around the world in support of the United Nations.
Information about each of the UK Armed Forces, follow the links at the bottom of this page.
Ministry of Defence
The Ministry of Defence is the government department responsible for the UK Armed Forces.
Jointly, they are responsible for defending the United Kingdom and promoting international peace and security.
MI5 (the Security Service) and MI6 (the Secret Intelligence Service) are not part of the Ministry of Defence. They are accountable to the Home Office and the Foreign and Commonwealth Office respectively.