German Views of Irregular Warfare
The German irregular-warfare tradition — Johann Ewald's counter-insurgency principles from the American Revolution, Clausewitz's "people's war" chapter, Lettow-Vorbeck's irregular adaptation in WWI East Africa — rivals Germany's famous conventional expertise, and Clausewitz's lesson still bites: powerful nations that revert to regular-warfare solutions against irregular threats repeat Napoleon's error.
— In our words · Source: German Views of Irregular Warfare (Major Johann Hindert)