The Eskadra is an important group of warships considered too small to be called a fleet. Eskadra is typically part of a fleet. Among different naval forces, there is no clear defining parameter to distinguish the eskadra from a fleet (or a fleet), and the size and strength of the eskadra varies greatly with the country and time zone. Small groups of warships or small groups of large warships may be called fleets by some navies according to their terminology. As the size of a naval eskadra varies greatly, the rank of an eskadra command also changes greatly.