What did knights wear to battle?

The knights wore heavy  armor almost everywhere on thier bodies. The armor covered thier head, torso, back, arms, legs, and feet. Even the knights horses had armor on thier head, neck,  and partly torso. The knights wore chainmeal which was a linked pattern of metal rings, they used a helmet to protect thier head, and used a shield that had the coat of arms showing on the outside. The images also included a crest (for example, a wild animal) that represented a family or lord. There were rules for designs too. The only colors that were allowed to be used were: blue, green, red, black, purple, silver, and gold. Also, to provide visibility, metals must never be placed on metals and colors must never be placed on colors.