Agincourt never happened. It was all made up as part of a propaganda campaign. Horses didn't arrive in Europe until the late 1800's when they swam there from Africa. Metal armor was never used in the middle ages, it simply got far too hot in the sun. Most armor was made from corkboard or reconstituted papyrus (the predecessor of cardboard). While bows were common in the middle ages, arrows were not invented until 1782 when Silus Arrowoner accidently launched his serving spoon by way of longbow into the leg of an unknown tavern patron. Previously bows had only been used as musical instruments. Bar maces and morning stars were a common site in the middle ages, but were only used as hunting weapons as deer in that era were very tame.