I have been playing Medieval 2 lately and they seem to have many archer units that have shields on while firing. Is that a made up or is there evidence of archers using both at same time?
In a book about Eastern Roman/Byzantine military in 5th to 7th centuries it is mentioned as done by Byzantine foot archers. Horse archers ere not doing so. I do not know what was the source of the author for that, since the book was from university library that is closed due to corona. Source: Age of Hippotoxotai, art of war in Roman military revival and disaster 491-636.