Russia

• Battles
• Royals -> Republican names
• Saints
• Generals
• Mythical Figures
• Admirals
• Gemstones
• Adjectives
• Birds
• Animals
• Ethnographic names
• Communist themes
• Fish
• Revolutionary themes
• Political Figures
• Soviet themes
• Heroes
• Cities
• Weather Phenomena
• Insects
• Diminutives
• Alphabet names

Indonesia

• Great statesmen
• Main Indonesia Islands
• Nnational heroes
• Mythical weapons
• Bays
• Cities
• Weapons
• Wild animals
• Islands
• Native fish
• Sea creatures
• Native snakes
• Wild reptiles
• Wild insects
• Geographical places starting with si
• Volcanos
• Capes and straits

British

• in- (invincible, inflexible)
• Letter classes (B: Bulldog, Basilisk, Boreas)
• Weapons
• Tribes
• Towns
• Cathedrals
• Counties
• Flowers

Japan

• Provinces
• Flying creatures
• Mountains
• Rivers
• Weather Phenomena
  -wind, -rain, -snow, -frost, -waves, -tides, -clouds, -mist,
  Autumn wind, pale moon, evening clouds,
• Phases of moon
• Trees

American

• States
• Battles
• Famous ships
• US territories
• Navy, Marine or Coast Guard heroes
• fish
• marine mammals
• crustaceans
• rivers w Native names
• mythical figures
• cities
• volcanos
• fire/explosions (Nitro, pyro)
• stars or heavenly bodies
• function hospital ships
• American Indian tribes
• admirals, politicians, presidents
• early sailing ships
• Marine corps battles
• Explorers or pioneers