Scimitar
The curved sword or better known as the Scimitar. This weapon grew to be the main weapon in the middle east during the medieval times. The sword excels at defense and offense, both equally. It's a fabulous all around weapon too, that is used all over the world now and even when it first came out, it was spreading fast all over the middle east.
Greek Fire
This incendiary weapon was highly effective in 'caution fire' type zones on the battlefield. Very portable and was used by the Chinese, Mongols, Muslims, etc. The name isn't very original because the Europeans in the medieval times called anything incendiary 'Greek Fire'.
Longbow
This weapon has amazing accuracy and can be fired at all ranges, most likely, with a kill following. This bow, unlike it's brother crossbow, has the best range out all handheld medieval weapons which gives it a true 'long shooter' his needed edge on the field.