Any vehicle or set of figures, any era, so long as it/they served in the United States military. Scale would range from 1:72 to 1:16. Basic rules for my campaigns are the same. I'm thinking starting April 19, 2015(in memorial of the first battle of the American Revolution) and running for six months. What do you guys think? One stipulation is that the equipment must have been purchased by the US military. No captured vehicles.