So most famously, perhaps, you have the Battle of Badr, because this is the first time that you have a significant confrontation between a very small, you wouldn't even necessarily call this an army, a small group of Muslims, roughly a little over 300, according to Muslim tradition, versus 900, or a little over 900, on the Quraysh side. And the Muslims are outnumbered three to one. But this results in a Muslim victory. And so you can imagine, the early Muslims start to see this as a turning tide. They were able to defeat the powerful Quraysh tribe. Now, the Quraysh weren't happy with that. And roughly a year later, you have another battle outside of Medina, on Mount Uhud.