The Military History Institute in Prague provided access to seventeen manuscripts from the collections of its library in 2018. Most of them come from the 18th century and are written in German. These are chiefly manuals for marching and military exercises and texts on fortress architecture (the most extensive of them is the set of documents of Johannes Christoph Glaser, which were further reworked by Friedrich Ludwig Aster), also e.g. a handwritten copy of the printed book Grundsätze der Lagerkunst und Taktik by Frederick II with a planned supplement, and documents on military exercises of the Austrian army 1781–1804.