This royal flag was, at first, to be used only at sea on civil and military ships of both England and Scotland, whereas land forces continued to use their respective national banners. In 1634, King Charles I restricted its use to the royal ships. After the Acts of Union 1707, the flag gained a regularised status as "the ensign armorial of the Kingdom of Great Britain", the newly created state. It was then adopted by land forces as well, although the blue field used on land-based versions more closely resembled that of the blue of the flag of Scotland.