I use Simplify3D as my slicer and it does really good work with support structures. Still, I find that you need to examine the support built for each model and adjust as needed. In the case of this carrier I needed to remove the support around the heads of the driver and gunner.
I have also found that prints done in PLA can be cleaned up but expect a fight! Finally notice how the support stuff hangs out from the side of the model. This is a configurable option and really helps with cleanup.
|1. Starting Point|
|2. Starting to Strip|
|3. Halfway Through the Bottom - You Need to Start Here!|
|4. Bottom all Stripped|
|5. Ready to Strip Right Side|
|6. Right Side Stripped|
|7. Ready to Strip the Left Side|
|8. Left Side Stripped|
|9. Ready to Strip the Front|
|10. All Stripped|