Help: Name this game

[lbaeza]

Hi guys

This game was a battle game. No scrolling, all action happens at the
same screen. Game was from '84/'85 (raster, color). Two armies fight
on a battlefield (You v/s Player 2 or the machine). Armies are
composed of soldiers, tanks, helicopters and UFOs (yes!). UFOs can
abduct enemy soldiers and turn them against the enemy (sort of
brainwash). Both armies advance towards the center of the screen,
where all action takes place. You control your objects  (soldier,
tank, whatever...) using some kind of cursor to select the object and
point it where to go and attack. Each object moves by itself and fires
by itself, sort of Lemmings...

Here's a picture of the game as I remember it:

http://www.drvonbyte.com/atari/img/namethisgame.jpg

Any help will be appreciated.

Regards