Depending on the time period, a knight could have more than one sword. An arming sword (also called a Knight's or Knightly sword) refers to the single handed cruciform swords of the Middle Ages, in use between ca. 1100 and 1300, but in particular instances down to the 16th century. They are to be seen in period artwork and many museum examples survive. Typically used with a shield or buckler they were the standard military sword of the knight (merely called a war sword) until technological changes led to the rise of the long sword or bastard-sword during the 14th century (while examples exist before this, they became dominant in a knight's training syllabus around this time). After these longer swords came into use, an arming sword would be kept as a backup, for use when the longer swords were not available. This sword is thought to have directly lead to the development of the side-sword of the Renaissance.