Quote Originally Posted by Medieval Assassin
More than likely from Traits, for example "Good Infantry Commander" I do believe gives one chevron to any infantry on the battlefield
and then there is an equal one for calvary...I think it might be "Galloper" But I'm not completely sure.
the " Good infantry commander" trait gives your general more command stars when commanding infantry. It doesnt give your infantry units more chevrons on the battlefield. I dont think there is any traits for giving or taking chevrons from your units.

I too noticed that sometimes my units have lesser chevrons on the battlefield than on the campaignmap