The Armoured/Information/Siege/Skirmish Warfare are what give the bonuses, they take a long time to train and require Charisma, something most people don't have high attributes in.
If the pilot can fly a Command Ship they can fit Warfare mindlinks - they need to train Cybernetics 5 to fit these - and they amplify the bonuses given by gang assist modules (xxx Warfare Links)
Gang assist modules occupy high slots and the require appropriate Warfare Specialisation to be trained.
Note that each race's command ship provides different bonuses, I'm Gallente and the EОS givеs hefty EW ones and so on.
If you are a young pilot I would not bother beyond Leadership 5 for now‚ it took me about 4 months to train up to where I am (Wing Commander 4, 5555, Info War Spec 5 Warfare Link Spec 4) and I have used the EОS as intеnded exactly once in the last year...