The US military is planning a fundamental transformation by 2050, driven by technological advancements and the resurgence of peer competition, primarily from China and Russia, necessitating a departure from past assumptions of dominance. This transformation envisions a force deeply integrated with advanced technologies like AI and autonomy, operating under new all-domain concepts such as JADC2 and MDO, and featuring a hybrid mix of manned and unmanned platforms across air, space, land, sea, and cyber domains. However, this ambitious modernisation faces significant challenges related to affordability, industrial capacity, and the complexities of joint integration and institutional adaptation.