DEF21 is a major training event planned and led by USAREUR-AF during which HQ MNC-SE aims to increase readiness and interoperability within a multinational training environment. With the support of HQ ARRC, HQ MNC-SE will achieve Initial Operational Capability (IOC). The exercise is being conducted within both United Kingdom and Romanian national Covid guidelines.
The cooperation between HQ MNC-SE and HQ ARRC, was founded in the Mutual Training Support Agreement (MTSA) signed by both parties in May 2020. HQ ARRC will provide support and expertise to HQ MNC-SE throughout the operationalisation process, through IOC this year and to Final Operational Capability (FOC) in 2024.