8th level?

Not having beat that level in a long time I can only guess, but I think unless your radar shows you the locations of those tanks thne you're gonna have to remember roughly where they show up. If they have a ton of armour like I think they do, your best bet is to shoot a Hellfire missile and a bunch of rockets as fast as you can to take them out, preferrably flying over at a high speed so it doesn't have much time to react.

Ah man, that is tough no doubt, I just took a crack at it and died. I think the problem is the minute you start hitting a tower those tanks arrive and start to demolish you. >_< I think taking out the towers as fast as humanly possible is the only way to do that without losing a life, you can't destroy the tanks, they're too powerful it seems.

as said before, dust the towers then the m1s become easier to beat

basic rule of the strike games: all stats in the game (speed, firerate, armor, damage) of enemies are correct UNLESS they are protected by early-warning (usually told in the missions eg another task, radar, towers, other units tho sometimes you have to guess)

if they are protected by early-warning, you can quadruple those stats, meaning even a lowly bazooka soldier can dust you in seconds