A knight trainee is also known as a SQUIRE, which is a six-letter word. A SQUIRE is a young man who is in training to become a knight. Squires are typically between the ages of 14 and 21 and serve as an apprentice to a knight, learning the skills and values necessary to become a knight. They are expected to learn horsemanship, swordsmanship, and other martial arts, as well as etiquette and courtly behavior. Squires are also responsible for taking care of their knight's armor and weapons, as well as attending to their knight's needs.