With a complex scenario and incidents similar to what could be expected in the event of an actual real-world crisis or conflict, the MNC NE Headquarters considered a variety of inputs while working towards effective solutions to operational dilemmas. STJU21 saw the Corps personnel applying their skills across the whole spectrum of land-based operations — from hybrid threats to real combat capabilities. Additionally, it tested the ability of the MNC NE Command to consider, engage and strategize as to how they would manage the information and media environment.
For HQ MNC NE and its subordinate formations, including two multinational divisions (North East and North), STJU21 was the culmination of over year-long preparations supervised by Allied Land Command (LANDCOM). "The evaluation process was pretty nuanced," MAJ Billy Blue from the LANDCOM evaluation team said, "We had detailed guidance that referenced what we needed to check about how this organization is interoperable with the rest of the Alliance." The primary purpose of the Combat Readiness Evaluation (CREVAL) test was to validate the capabilities of the Corps Headquarters to perform its mission as NATO's Regional Land Component Command and to identify areas requiring improvement. Secondarily, CREVAL provided the MNC NE Commander, LTG Sławomir Wojciechowski, with recommendations and feedback on how to best develop the Command and the Corps in its entirety:
Our procedures and standards have been tested, and they have proved their value. We have a solid foundation from where we can further improve. We have shown the CREVAL team, our superior and adjacent commands and — not least — our region that we are capable of performing our role effectively and reliably, LTG Wojciechowski stated.