I never liked Choplifter....perhaps because I sucked at it. There didn't seem to be a way to rescue the other buildings unless you went and crashed into it to set it on fire
There was a similar game though, called Rescue Raiders. I still love that game even today. You were in a helicpoter with guided missiles, bombs, and machine guns (that later are replaced with air to ground missiles...very devastating).
You slowly accumulated money, with which you could buy tanks, engineers (that could repair AA guns, infantry (useful for taking little base installations), Demolition trucks (the only thing that could take out the enemy base and win the level). And an anti-aircraft jeep that would shoot down the enemy helicopter. Both sides were equal (in terms of units), so it was just a lot of fun
And it was all played from the same side scroller perspective that Choplifter! had