In Denmark, the Danish Armed Forces (Forsvaret) have a variety of missions, including enforcing the country’s sovereignty, monitoring Danish waters and airspace, search and rescue, environmental protection, host nation support for alliance partners, international peacekeeping, fulfilling Denmark’s commitments to NATO, and providing assistance to the police for border control, guard tasks, air surveillance, and during national disasters and other emergencies

NATO has been a cornerstone of Danish security and defense police since it joined in 1949 as one of the organization’s original members under the North Atlantic Treaty (also known as the Washington Treaty); the Forsvaret regularly exercises with NATO allies and participates in a number of NATO missions, including its Enhanced Forward Presence in Eastern Europe, air policing in the Baltics, naval operations in the Baltic Sea and North Atlantic, and an advisory mission in Iraq; the Forsvaret leads NATO’s Multinational Division – North (inaugurated 2019), a headquarters based in Latvia that supports the defense planning of Estonia, Latvia, and Lithuania, and the coordination of regional military activities, including NATO’s forward deployed forces; it also takes part in other international missions for Europe and the UN ranging from peacekeeping in Africa to protecting Europe's external borders by patrolling the Mediterranean Sea in support of the European Border and Coast Guard Agency; Denmark is a member of the EU and voted to join the EU’s Common Defense and Security Policy in a June 2022 referendum; the Forsvaret cooperates closely with the militaries of other Nordic countries through the Nordic Defense Cooperation (NORDEFCO; established 2009), which consists of Denmark, Finland, Iceland, Norway, and Sweden in such areas as armaments, training and exercises, and operations; it also has a joint composite special operations command with Belgium and the Netherlands

the Defense Command is Denmark's overall military command authority for land, air, and naval operations, although the Army, Air Force, and Navy also have their own individual service commands; an Arctic Command protects the sovereignty of Denmark in the Arctic region, including the Faroe Islands and Greenland, and conducts maritime pollution prevention, environmental monitoring, fishery inspections, search and rescue, and hydrographical surveys, plus support to governmental science missions; there is also a joint service Special Operations Command, which includes the Sirius Dog Sled Patrol, an elite unit that patrols the most remote parts of northeast Greenland (2024)