This chapter explores knowledge associated with the humanities that hasbeen developed in practice-oriented research domains of the Swedishgovernment to help solve societal challenges. I study the Swedish NationalDefense Research Establishment [Försvarets forskningsanstalt] (FOA). Theconcept of “borderline humanities” refers to research activities that didnot abide by academic distinctions between the humanities, the socialsciences, and the natural sciences. The study shows how knowledge onhuman culture, history, language, and beliefs developed in a researchenvironment that drew on diverse fields of both research and practice.The chapter brings to the fore shared themes and concepts betweendifferent research fields and draws attention to how this affects the viewof research impact.