Capital ships are the most important and largest warships. There is usually no formal criterion for the classification other than that these ships tend to be heavily armed and armored. A capital ship is generally a leading or primary ship in a fleet, battlegroup, or strike force.
These are all of the currently known Forerunner ships that fall into the Capital Ship category. They are as well listed with the era they are known to be used as Capital Ships:
These are the classifications of Covenant warships known to fall under the Capital Ship category. They are as well listed with the era they are known to be used as Capital Ships:
These are the classifications of UNSC warships known to fall under the Capital Ship category. They are as well listed with the era they are known to be used as Capital Ships: