Ravenstar has a reason for this patrol. Before she became leader, someone came into LightClan terriotry and stole her kits. As of now, we don't know if her kits are alive or not.  But this made Ravenstar to make this patrol to keep every kit in LightClan safe. And won't suffer for what Ravenstar went through. 

Okay stay close to us, and we'll teach you how to hunt.