Stalin wishes to field-test a newly acquired vehicle against the Allied dogs. This vehicle is capable of bending light around its hull, "phasing" out of the visible spectrum.
Take this vehicle, and infiltrate the Allied base. For this test, destroy their radar dome and tech center, bringing their communications down. Once you have done this, reinforcements will be sent in to wipe out the base.
If you do not return with the vehicle intact, do not return at all. - Mission briefing