Carrier Group = 1 aircraft carrier with 40–90 combat aircraft + support ships
Battle group: 1 battleship/battle cruiser + support ships
Cruiser group: 4 heavy cruisers + escorts
Destroyer group: 5-7 light cruisers + escorts or a destroyer patrol
Patrol craft group: various coastal patrol and motor boat ships.
Sub group: 6–18 active submarines out at any one time
Escorts: 8–10 frigates, escorts, and corvettes for trade routes
But, CA group are named with actual names of ships. Is the convention is to use the first ship of a given class?
