Adjusting to the new leadership positions was not easy for Dakgu and Gurln. Although Dakgu had some experience it was short to not describe it as fleeting. Gurln was isolated by the sacred tribe so he needed not be mentioned.
Ed's foresight in giving them the ex-chiefs of the assimilated tribe was thus considered great. While winning battles was easy with or without them, reducing casualties as well as knowing how to manage things like morale was much harder.
Orcs were luckily not usually deterred by a losing situation but that didn't mean one couldn't spur them on further. On the contrary knowing to make use of this trait of theirs was very important.
It was the only way to ensure that the casualties they suffered couldn't compare to the amount of people they gained. Of course, with their prowess it wasn't even worth mentioning the losses. That was if not for the sake of mourning and respecting the dead.