Theme: 21st Century
Expansion #27 for Warfighter: The Tactical Special Forces Card Game.
The Poland expansion gives you Player Soldiers, Non-Player Soldiers, and Squad Soldiers from Poland. Also included are their Weapon and Equipment cards.
This provides you with everything you need to run missions.
All you need to do is use these Soldier, Weapon, and Equipment cards instead of the US cards at the start of a Mission, and you are good to go.