From the back of the box:
The Universe of Traveller - Communication is limited to the speed of courier ships. Remote central governments exercise only limited control over the affairs of their frontier territories. Megacorporations struggle for control of sparsely settled mineral-rich worlds. And everywhere, there are mercenaries for hire to settle disputes.
Striker fills an important place in the Traveller universe - rules for ground combat with 15mm figures and vehicles.
The basic combat system used in Striker is based on the popular Azhanti High Lightning game system. The movement system is simplified for use with larger forces and a ground scale of 1"=25 meters. The basic rules are written with the beginning miniatures player in mind and can easily be used as a combat resolution system for existing Traveller games. All weapons and vehicles covered in Traveller and Mercenary (Book 4) are rated for use in the game.
The true value of Striker, however, lies with the advanced rules. A complete system for designing armored vehicles and aircraft at different tech levels is presented, along with air-to-air and air-to-ground combat rules. The package contains everything a Traveller adventurer needs for campaigning with miniatures.