Ambulance

The Ambulance was an unarmed variant of the American Humvee designed for a battlefield support role, used during the War against the GLA.

Background
Medical staff can use the equipment on the Ambulance to heal nearby soldiers or occupants of the ambulance back to fighting condition. Later in the conflict, Ambulances were also able to repair nearby vehicles. Additionally, the Ambulance is immune to radiation and toxins, and could release a foam to clear them up, preventing harm to other units.

Upgrades
Drones can be further upgraded with Drone Armor.

Game unit
In Zero Hour as of patch 1.01, the Ambulance gained the ability to repair all nearby friendly vehicles, in addition to its infantry support role. This made them much more valued due to the vehicle, not infantry, dominance of the battlefield.

Changelog

 * Zero Hour patch 1.01: can now repair friendly vehicles

Trivia

 * An unused model exists for a "medical drone", which would likely serve the same function as the Ambulance, but it was scrapped in favour of the Ambulance during development.
 * General Alexis Alexander was supposed to have her own version of the Ambulance called the "Mechanic", which would repair vehicles instead of healing infantry. The Mechanic could hold up to six infantry and was armed with a small machine gun. The unit was cut, but its model and voice files still exist. The ability to repair vehicles was given to the existing Ambulance unit in the released version of Zero Hour.
 * Interestingly, military ambulance's would be legally a non-combat and thus illegal to attack making any such attack a war crime under Geneva laws. GLA most likely wouldn't have an issue since their goals is terror in nature however it also means that USA allowing a combat drone being able to attach to it a war crime in itself since non-combatants are not allowed to be armed except in self defense. However, it should be noted that Geneva laws is a Quid-Pro-Quo treaty so if GLA didn't sign the treaty (which non state factions are not allowed) thus they are not protected under any clause of the code. Which would leave it up to whatever the US rules of engagement allows.