You should at least pick Flashbang/Searing Light and Scars of Battle, Field Command/Squad Tactics and Oleron’s Rage otherwise no point to choose Soldier
1 point in BWC + Potency would be nice too (good damage reduction) and Thermite mine of course
EDIT : you can use Grimtools to share your build as it’s better for people to understand what you did (+skills, gear …) and provide good advice