The inaugural ‘From Reason to Revolution Conference' took as its theme ‘Command and Leadership', which was explored in a variety of different ways by eight speakers whose papers took in the armies of France, Austria, Portugal, and Britain (and touched in passing on those of Prussia and the Netherlands too), and whose geographical remit encompassed North America, Europe, and Africa. This volume presents the proceedings of that conference. The first three chapters consider lower-level leadership, with a focus on ideas of expertise and professionalism. Will Raffle explores the tensions between local experts in New France and professional officers from the mother country, taking as its case study the campaign for Oswego in 1756. Tobias Roeder looks at the Habsburg officer corps during the eighteenth century and the tensions between the dictates imposed by the profession of arms on the one hand and the social expectations of a gentleman on the other.