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With the lack of health regeneration medics play an important role in Battlefield Play4Free. This training option allows soldiers to increase their usefulness to the team, allowing them to create multiple points to heal their teammates.
As it requires at least five points spent in to the equipment expertise tree and all four ranks of Medic Box training, this training option is better for players who are around rank 10 to 20 that know when and where healing will be needed. There is only a single rank for this option, but it essentially doubles the Medic Kit's effectiveness in battle.