Gunner is good againt tanks and againt infantry in tunnels, officer is good againt light vehicles and infantry.

However, some people 0wn with the rocket launcher and some 0wn with the Officer, personally I opt for the rocket launcher because if i do get to the base I can do more damage.. or make a great distraction going for 1 building when a buddy c4s the real target.... again... different situations call for different things... be aware of the battle field and choose your unit accordingly.. not only will you be more successful.. but your team will last longer 2