ZOCOM is the “Shock and Awe” sub-faction for GDI. Zone Raiders are a staple infantry unit for this side, as is sonic weaponry that is particularly deadly against unit spam.
Units
Zone RaiderZone Raiders replace the traditional Zone Troopers. Armed with sonic grenade launchers and AA rockets, Zone Troopers are equipped for nearly every situation. You can still use jump-jets, and one of the old upgrades (Scanner Packs?) allows them to become stealthed.

SlingshotThis hovercraft is a sole anti-air vehicle. It tears any and all aircraft to shreds within seconds, although it’s very weak in direct combat.

ShattererThe Shatterer is another hovercraft unit armed with a sonic emitter cannon. Use this unit to smash through tank spam and bases. The ZOCOM Shatterer can unleash an extra damaging Sonic blast which does insane damage but shuts down the Shatterer for a few seconds.

HammerheadHammerheads are probably the toughest air-craft GDI can build and is great against infantry. They can be garrisoned with infantry units for added versatility. Hammerheads never have to return to the airfield to reload or refuel, and you aren’t limited in the number you can build per airfield.

Rocket HarvesterZOCOM Harvesters are armed with rocket pods to defend against air and ground targets.

MARVGDI’s epic unit. Armed with a tri-barreled gun that fires sonic shells, this beast can be “garrisoned” by four infantry units. When garrisoned, the infantry battalion is sacrificed and one of the MARV’s hardpoints is upgraded with the infantry’s weaponry. The MARV can also be used to harvest
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Upgrades

Tiberium Field SuitsThis upgrade makes all infantry immune to tiberium exposure, and reduces the damage taken from tiberium attacks (such as those from Scrin units).
Sonic (EMP?) GrenadesUpgrades Grenadiers to do more damage with a large splash. (Unsure if there is an EMP effect)
Buildings

Reclamator HubThis structure is required in order to build the MARV. It can also build vehicles like a normal War Factory. Naturally, you are limited to only being able to build one of these.

Support Powers

Sonic Repulsor FieldsThis power is cheap and recharges quickly, but can only affect one building at a time. The targeted building becomes immune to engineer capture (unsure about commandos and shadow teams, but it would make sense).

Thor’s HammerThis is GDI’s new base-breaking power. Your enemy will be warned by a laser beam that precedes the attack and be able to move his units in time, so it’s mostly useful against bases.

Supersonic Air AttackCalls in several supersonic fighters that quickly eliminate all enemy aircraft within the area. It takes a couple seconds to arrive, do don’t waste it on moving air units!

Note: Orcas utilize sonic weaponry that does area of effect damage.