"No." Eric shook his head. He asked, "If war is the last resort, do you think we can build diplomacy or what not against zombies?"
Gregorio was taken aback. He lowered his gaze and replied in a gloomy tone, "No."
"That's right." Eric nodded. "That's why you have to be ready. You must know the war and tactics used in the past, so we could make use of it in the present. Say, do you remember them?"
Gregorio nodded and then shook his head. "Not all of them. Although I read them all, I forgot some of them."
"Alright. Try to give me fifty famous war events in history."
Gregorio was surprised. He rolled his eyes upward, trying to recall as he said, "One of the earliest recorded battles is the battle of Kadesh in the Bronze Age, and then the Battle of Marathon, between Greeks and Persians. The famous Battle of Thermopylae, to which the Spartan was known as one of the greatest warriors in history. The Battle of Salamis…"
He continued until his eyes lit up.