Somebody's base: totally screwed.

Red Alert 3 Uprising, skirmish.
The soviet Kirov Airship is a heavy bomber and the star of the Soviet arsenal since Red Alert 2. It is slow as molasses (In RA3 gained an ability to boost the speed at cost of taking damage over time) and can't attack anything at range (and completely defenseless against air units). However it is quite resilient, can self-repair, and anything hostile under it is in a world of pain. Red Alert 3 has a lot more ways to shut Kirov Spam down, but they still retained their base-wrecking potential, as well as the memetic shark decals on the front (not really seen). Not to mention that you can support them with fighters and Twinblades, or whatever else.