I'm playing a burglar at lvl 58 and have encountered a lot of trouble with skirmishes. I tend to run in gambler or mischief with mainly blue traits.
I have been trying to upgrade a soldier to help me but so far I've only achieved wasting points on soldiers that did not benefit me at all. What kind of soldier would be best for me? I've tried herbalist and bannerguard. The herbalist was unnecessary since I never had any problems staying at full or near full health and the bannerguard would take aggro off me and get himself killed first thing in every fight.
Is there a soldier which can stay at the back, doing something useful and not grabbing my aggro?
I agree with the suggestions above. I started with a Bannerman, but that didn't seem too helpful. I think the Archer and Sage are good choices, especially if solo and/or leveling.
But at 75 (and especially while grouping), I think the Herbalist is probably the best choice. I have no issues with CC or DPS, so having some morale/power restoration just seems to make things go smoother and faster.
The whole point of bannerguard is to take aggro - it helps a lot if you have positional damage modifiers. You probably didn't level up his traits enough. With heavy armor, evasion, and morale regeneration, my dude never dies even against Lieutenants.
But as Beleg said, Herbalist is also a good choice.
You can't go wrong with a Herbalist/Warrior/Archer, but I personally have fun with/am successful with a Protector. It saves me a lot of pain when I'm engaging multiple mobs and want to get the most out of my positional damage bonuses.