4 ideas
Napoleon habitually walked the ranks before battle and addressed veteran grenadiers by name, recalling which campaign they had served in, having been briefed by aides beforehand. He tugged ears, handed out the Légion d'honneur on the spot, and let rank-and-file men petition him directly. Roberts treats this rehearsed intimacy as a deliberate command technique that bought extraordinary loyalty from men he was about to send into lethal danger.
Roberts argues it is Napoleon's most durable achievement because it survived his military defeat and was kept, in substance, by the states he had conquered. Military gains were reversed within a decade, but the institutional reforms stayed.
Napoleon made promotion depend on demonstrated merit rather than birth. His marshals included the sons of an innkeeper, a cooper and a barrel-maker, and the Légion d'honneur rewarded civilians and soldiers alike. Tying advancement to performance widened the pool of capable leaders and made the people who rose owe their status to the regime, which bound their interests to its survival.
Napoleon ran France through a prefect in each département, appointed by Paris, who carried central policy down to local government and reported conditions back up. He added his own relentless stream of letters demanding specific figures and follow-up. This created a single chain of accountability that let one executive govern a large state in detail, at the cost of local autonomy.