"History of Friedrich II of Prussia — Volume 04" by Thomas Carlyle is a biographical work published between 1858 and 1865. This volume forms part of Carlyle's monumental six-volume biography of Frederick the Great, a project that consumed thirteen years of the author's life. Born from Carlyle's decades-long fascination with the Prussian king, the work emerged through painstaking research, trips to German battlefields, and collaboration with numerous assistants. Praised by contemporaries as a masterpiece of literary genius, it blends historical narrative with Carlyle's distinctive wit, vivid characterization, and moral insight. (This is an automatically generated summary.)