Garthanos
Arcadian Knight
There is a story of Alexander the Great directly to the front of the battle and charging in on his own... some saw it as guilting his troops into protecting him.On the other hand, the army commander’s fluff text clearly indicates that its unit-buffing is due to its “moral support” and inspiring the troops to “fight harder when he was nearby”
A hero's presence inspiring others to stand strong, be brave and do their best or try harder to keep up is totally in keeping flavor wise too. It may not be explicit guidance but inspirational. Alexanders tactical genius seems to have made it inspiring and explicit guidance both. He also took over the known world while very young.