Whilst the battles in Ukraine have evidenced the tenacity and stamina of Ukrainian forces, their success in defence and offense is determined by the Ukrainian General Staff. As a team steeped in Soviet fighting doctrine, they have executed the whole spectrum of military planning and execution (termed 'operational art') that few could replicate: certainly not the Russian generals who seem to have forgotten their own way of war and how to fight well. Underpinned by a trust in Ukrainian tactical leaders, their soldiers, as well as a deep insight of their adversary, how this team have commanded should be a salutary reminder to other commanders about what it takes to fight, and to win. Peter talks to soldier-scholar Mick Ryan about what will be worrying them next, and what observations we can make now about operational art for the future.