The Royal Danish Navy is the sea-based branch of the Danish Armed Forces force. The RDN is mainly responsible for maritime defence and maintaining the sovereignty of Danish territorial waters. Other tasks include surveillance, search and rescue, icebreaking, oil spill recovery and prevention as well as contributions to international tasks and forces.

The Danish Defence is the unified armed forces of the Kingdom of Denmark charged with the defence of Denmark and its self-governing territories Greenland and the Faroe Islands. The military also promote Denmark's wider interests, support international peacekeeping efforts and provide humanitarian aid.