Italy/Eevee: Pretty much entirely support, helps with almost any deck
Germany/Jolteon: Relies on speed by using Blitz to rush the frontline
Soviet/Flareon: 'Burn' your own HQ to make units stronger, red and yellow colors
Britain/Vaporeon: Very defensive, strong navy, oversea imports
Finland/Glaceon: Winter War, need I say more?
USA/Leafeon: Specializes in speed and resources, plant is resource
Poland/Espeon: Knowing your opponents cards, reading opponents minds
France/Umbreon: Fill your opponents hand, very dirty tactic
Japan/Sylveon: GO STRAIGHT FOR THE THROAT (Your HQ)