army, created in 1422, that would be mustered from the constituents of the Holy Roman Empire, during an imperial military campaign (Reichsheerfahrt) during an Imperial War (Reichskrieg) or an Imperial Execution (Reichsexekution)
Paderbornischer Soldat Gudenushandschrift 1734 Karlsruhe.jpg
Brockhaus and Efron Encyclopedic Dictionary
Small Brockhaus and Efron Encyclopedic Dictionary
Meyers Konversations-Lexikon, 4th edition (1885–1890)