US Artillery I (M102)

Description:
Effective at long range, the M102 can cripple opposing forces before they engaged, resulting in a safer skirmish.

Attributes:
Fires high-damage shells to a distant area.

Controls:
Aim – RS
Fire – RT
Shell Cam – RT (Hold)
Rotate Turret – LB/RB

How to best use it:
Artillery turrets are slightly effective against any and all ground units. The higher the upgrade the more effective it is, doing a greater amount and larger radius of damage. It’s designed to help against almost any type of enemy, the one thing that to remember is that, unlike all other turrets, you have to control which direction it is facing. If you do not keep up with constantly changing the fire trajectory, then these units will end up useless about 50-60% of the time.

US Artillery II (M198)

Description:
Menacing in large numbers, though they nevertheless suffer the same problem as all batteries: You have to purchase them separately.

Attributes:
Fires cluster bombs for a larger are of effect.

Controls:
Aim – RS
Fire – RT
Shell Cam – RT (Hold)
Rotate Turret – LB/RB

Tips:
This is great against troops and small or medium vehicles, with a long-range of fire it’s best to place this where it will have good visibility of the entire field.

US Artillery III (M270 MLRS)

Description:
Capable of releasing a salvo of 12 rockets, the M270 MLRS can eliminate a large section of enemy infantry and change the tide of battle.

Attributes:
Discharges a salvo with wide are effect.

Controls:
Aim – RS
Fire – RT
Shell Cam – RT (Hold)
Rotate Turret – LB/RB

Tips:
As this upgrade moves to rockets it trades infantry effectiveness for a better defense against vehicles. So just remember if you are using artillery for foot soldiers as well as vehicles it is best to save this upgrade for the later waves.