With the abolition of the Danish EU defence opt-out, Denmark is fully included in European cooperation on security and defence. This means that Denmark can choose to contribute to the EU's military missions and operations and request participation in the Permanent Structured Cooperation in the Defense Area (PESCO) and the European Defense Agency (EDA).

The Common Security and Defense Policy (CSDP) forms an integral part of the Common Foreign and Security Policy (CFSP). Through the EU's common security and defense policy, the EU countries can jointly launch civil and military efforts that can contribute to crisis management, conflict prevention and peacekeeping tasks outside the EU's borders. The EU does not have its own military forces. It is the individual member states that make civilian and military capacities available to the Union for the implementation of the common security and defense policy.

From mid-October to mid-December 2022, Denmark contributed a helicopter doctor to the EU's peacekeeping Operation Althea in Bosnia and Herzegovina and Denmark has offered the EU to make a helicopter available for the mission again throughout the second half of 2023.