The RD1 is a type of drone featured in Call of Duty: Heroes. In order to be trained, it requires a Level 3 Machine Compound. The RD1 heals Human units as well as Heroes, and they are best used with Juggernauts and RPG Troopers. They should be deployed carefullly, as sometimes they don't always move to heal units with lowest HP remaining, and while they are moving they will succumb to SAM Turrets and Anti-Air mines.
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