The original battle was 1,500 English against 2,500 French.
The English use of the longbow was the first indiscriminate use of mass killings, i.e. the English longbow was a weapon of mass destruction.
The killing of the prisoners was the first instance of unnecessary slaughter, the end of chivalry.
Agincourt was the first instance of (heinous) “modern” battle.
Rather tangential:
Really must see BBC “Hollow Crown” series, Tom Hiddleston (Loki) as Prince Hal.
About the author:
Born and raised in a small town in East Texas, Kramer Wetzel spent years honing his craft in a trailer park in South Austin. He hates writing about himself in third person. More at KramerWetzel.com.