Kanonier (left) and Feuerwerker (right) of the Russian Imperial Army (1878)
Feuerwerker (ordnance technician or specialist, literally 'fire worker') are specialists in the armed forces of German-speaking countries responsible for the maintenance of ammunition.
From the late Middle Ages until the Early modern period a Feuerwerker was a highly specialised artisan with detailed knowledge of the closely guarded secrets of making gunpowder. Since the 19th century Feuerwerker became a distinguished career in Austrian, German and Russian (Russian: Фейерверкер; Feyerverker) armed forces.