This could be a bit challenging single player mission
MISSION DESCRIPTION:
You will be in a control of Allied Encampment in Eastern Europe, which is in grave danger of fall due to huge Soviet attacks. This base must not fall to Soviet attacks. There will be many reinforcements for the Allied but so as for Soviets
Once the mission starts, defend the Allied base as much as you can - fighting huge Soviet army. To stop even bigger reinforcements from Soviet, Tanya will be dropped in the east side of the map. Send Tanya to the north side, while bringing Spy into the radar dome that is connected to the Tesla Coils, that are nearby the north bridge, which Tanya will have to take down. Once spy infiltrates the radar dome, it will take down the Tesla coils., making Tanya's way safer.
Destroy bridges as you see fit. This will help slowing down Soviets moving to the Allied base.
MCV will arrive few minutes. Start the base and destroy the remaining Soviet presence.
There are three Soviet bases in the vicinity, with notable size of units.
It'd be wise to strike one of these as soon as you can
