This episode has it all. The plague. Trebuchets. WWII. Ducks. Theresa starts us off with a rollicking tale of how the Golden Horde allegedly flung their plague-ridden corpses into the city of Caffa around 1345–1347 because Khan Jani Beg had some big feelings about losing. Thank goodness Angie takes it upon herself to lighten the load, so to speak. She shares the story of Marine Sergeant Jack “Siwash” Cornelius, the duck that fought in several amphibious assaults in the Pacific Theater during WWII. 

This episode pairs well with: 
The Children Crusade of 1212
Sargent Stubby, the stray dog who served in WWI