From their blog: https://manticblog.com/2018/09/14/kings ... e-mantica/
"YOUR WARBAND, YOUR STORY
We’ve designed Vanguard to be played as one-off games, but for those who want to go a little deeper, you can also play through an action-packed campaign. You’re able to create your company of elites (and a few grunts!), assign them special roles, equip them with the best items and then head into the danger zone!
There are 28 pages of detailed campaign rules in the rulebook, so as your fighters gain experience, they’ll learn new, more powerful abilities and become your warband, with your story.
We’ve been busy creating our own warbands here at Mantic. From next week you’ll be able to read about the progression of our warbands in a series of blogs (the tale of the 47 gamers).
LINKS WITH KINGS OF WAR
Vanguard and Kings of War complement each other and harmoniously work together. All the 12 missions in the Vanguard rulebook have optional hooks with Kings of War, so your Vanguard skirmishes can have implications in your larger battles.
Not only that but Vanguard is helping us create entirely new units and heroes for Kings of War that will be introduced via the annual Clash of Kings supplement. So, the bigger Vanguard gets, the bigger KoW becomes too! Oh, and the models are all compatible – so if you just fancy some new heroes for your KoW army then Vanguard releases have you covered "