The Danish Home Guard (HJV) is the fourth service of the Danish Armed Forces. It was formerly concerned only with the defence of Danish territory, but since 2008, it has also supported the Danish military efforts in Afghanistan and Kosovo. The Danish Home Guard has also provided training to Ukrainian soldiers in Ukraine, prior to the Russian invasion of Ukraine. Service is voluntary and unpaid, though members' loss of income from time taken off work, transport expenses and other basic expenses are compensated. However, workshop and depot staff plus clerks and senior officers are all paid. The unarmed Women's Army Corps (Lottekorpset) was merged in 1989 with the then all-male Home Guard to form the present, armed unisex Home Guard.

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.