It is the responsibility of the Corps level of command to set the conditions for a favourable and unfair fight at the tactical level: so says Major General Mike Keating, Chief of Staff at Headquarters Allied Rapid Reaction Corps. The scale, complexity, and enduring nature of combat on land requires a structure that can enable divisions to fight and prevail, enabling subordinate formations to focus on the immediate and near term with the resources necessary to succeed: recognition of that has seen a renaissance in the Corps level in NATO, and more widely. HQ ARRC was deployed and employed in Afghanistan during the COIN era, but the skills and functions were different; political, and immediate. Today, the Corps has changed. Mike explains how – and what the future holds for the highest level of tactical command and control.