You can flank the enemy through the riverbed in the no-go zone with the ATV (possibly the jetski too). Rolling up from behind on all the entrenched enemies will destroy them (on the inside)! 
 
Try it out. You'll love it. Enjoy the killing spree.

I suspected that that might be possible, thanks, also, you seem to play BC2 alot, are you playing on a 360?

" @Venatio:   PS3 - 170+ hours right now. Am in the top 50 score and kill wise. There are only about 500 people on PS3 more crazy about this game than me (as in having played more). "

Yeah, you can totally just walk over the rocks or some shit. Its a really good flanking area to avoid a choke point from coming in on one area.

I think we should start a "Protip" type of section on GB. Not cheats or anything, just strategies and tips.

Successfully pulled off the flanking manouver with the ATV, the Humvee AND the Jetski. 
 
Jumping the Jetski over the rubble under the bridge is tricky, but there is a little rock (really small) shaped like a ramp on the left side. If you hit it just right you'll make it. 
 
Didn't try the APC yet, but I'm pretty certain I'd run out of time before getting out of the enemy's artillery zone.