[Sven]

After a few initial failures, have figured out how to win it. Of these
missions, mission 6 has been the hardest so far (I finished it with just one
remaining unit who almost died because I had to force him across the Tiberium
field to reach the helicopter).
It took several tries, but I managed to cross the bridge and arrive at
the northeast corner of the map with most of my units (leaving the Engineers
back in the southeast corner).
I now took this surviving group and walked them along the ridge at the
top of the map to the northwest corner, and then south. I then opened fire on
the GDI buildings with the Bazooka men. This cause the AI to send its men out
of the base and up along the way I came in. As his men came in, I ran my
tanks up and down squishing them. This was far more effective than trying to
take them out with gun and tank fire.
Eventually you'll bleed off most of his men and you can move your group
back around to the base entrance. Use the tanks to take out the towers (and
place a man where they used to stand or the AI will
usually replace them). You'll now have to clean up any residual units in the
base and can also bring up the Engineers.
Take over any GDI buildings you want, or simply grab the crate and head
for the helicopter.

Hilft das?