Also, since this is a Windows game, your screen resolution and monitor size will affect game play. With less screen real estate to work with, you'll be swapping continually between windows. Once past these two problems, BI2220 starts to shine. Each unit is rated according to armor, range, fuel and has one or more weapon systems. As is typical, you'll find your real powerhouses tend to be hampered by slow movement or a less than ideal fuel supply.
Some units can move, attack, then retreat.
These tend to have smaller weapons platforms, but used correctly they can be remarkably effective. At the start of the game, your units will be limited to giant robots and tanks. By the end of the campaign, you'll be enjoying some fairly sophisticated combined arms warfare. Oh well, the emphasis here is on playability, not realism. In any given mission, you'll often have allies.