Take out the Sentry Guns first, then the Tesla Reactors. There is one Soviet garrisoned building in this area that will cause some trouble. Best way to handle this is have your tanks move to the building, and while the garrisoned Soviet Conscripts are firing at your tanks, have a group of GIs garrison the building next to it, then have them fire on the Soviet garrisoned building. It will soon fall. If course, you could just charge at the building, but be prepared to lose a lot of units.
Garrisoned troops are very strong.
After this are is secured a large group of Rocketeers appear in the northeast. Carefully explore the area around them. Just be cautious of any enemy Flak. This is deadly to the Rocketeers. Do not get them near any Flak weapons.