As you move up in battle rank you gain the ability to use implants, Implant Slots are where cybernetic devices known as Implants are surgically implanted within your character.  These devices can endow you with super human abilities such as Surge, which allows for a brief but explosive burst of running speed or the Personal Shield implant, which when activated gives your character a temporary force field to protect them from damage.

When activated, implants use up stamina. Thus slowing down your character, and limiting mobility (especially if activated for prolonged periods). If desired, you can activate multiple implants at once. However, your stamina will decrease like crazy.

 Advanced Targeting
Allows you to see the name and health of enemy characters under your reticule. It also reveals the names of enemies within a vehicle, as well as revealing enemy deployables at a greater range.

 

 Audio Amplifier
Amplifies footsteps of nearby soldiers, allowing onboard systems to analyze that sound and place enemy soldier locations on your personal radar, thus revealing their position when they are running.

 

 Darklight Vision
Greatly reduces your normal visibility while simultaneously shifting your perceptions to allow you to see cloaked enemies in an area around you.

 

 Melee Booster
Drains a soldier's Stamina when he swings a knife, but greatly enhances the damage of that knife when it hits.

 

Personal Shield
Harnesses a soldier's Stamina and turns it into a personal force field that blocks incoming damage on a one for one basis.

 

Range Magnifier
Used instead of a weapon's normal zoom function, but has much greater capacity. Zoom levels are 4x, 8x, and 12x.

 

Regeneration
Allows you to use Stamina points to quickly regenerate missing Health points at the cost of two Stamina points for each Health point regained.

 

Second Wind
When a soldier is on the brink of death, the Second Wind implant automatically strips Stamina away to boost Health to safer levels. After each use, a recharge period must elapse before Second Wind can be used again.

 

Silent Run
Using counter-frequency technology, the Silent Run implant completely nullifies the sounds of the soldier's footsteps when running. The bulkier the armor being worn, the more Stamina is used to muffle the footstep sounds.

 

Surge
This implant boosts the foot speed of a soldier by draining his Stamina to power enhanced leg units. The bulkier the armor being worn, the more Stamina is required to achieve the Surge in speed.