Template:AnthologyAll units representing ships and that need to be deployed in naval bases. Ships cannot upgrade to newer models, once researched. The only exception is that the CAG of a Carrier can upgrade to newer models, but not the carrier vessel itself.
Armageddon introduced naval brigades, to allow ships to be upgraded.
- Carrier Air Group (CAG). This brigade exists in all versions of HoI. They represent the planes of carrier. Only a CV can hold this brigade and no other ship may.
All capital ships except a CV and a CVL may hold any of these brigades.
Screen ships, additionally, can be outfitted with an additional brigade type.
- Anti-Submarine Warfare (ASW).