Cruiser
A cruiser is a warship larger than a destroyer originally made to be capital ships during the World War I and II era, but nowadays they are used for a number of roles. They are most commonly used as command ships, but it is hard to give them a specific role, since most ships nowadays, apart from aircraft carriers and amphibious assault ships, have very similar roles and sizes. Some of the cruiser's roles include launching many kinds of missiles, standoff, communications and command, bombardment, escorting other ships, and special operations. However, many modern ships also do this, with the main difference being size, firepower, and their intended use. This is because naval technology today that is capable of competing with other ships and winning, is very limited. The same was true in World War II, when most ships were built around big guns and speed. In both times, ships with different technology are considered obsolete or impractical and are not used much.