Tannenberg 1410. Disaster for the Teutonic Knights

https://imtw.ru/topic/15958-voenno-monasheskie-ordena/

"Tannenberg, 1410: The Lithuanians and Tartars clash with the Teutonic left wing, 9.00 am", Richard Hook

https://profesorjuliodapenalosada.blogspot.com/2016/01/grunwald-y-otros-combatres-polaco.html

https://weaponsandwarfare.com/articles/