In Assassin's Creed Shadows, players will meet several important allies over the course of the game, many of which become available as summons in combat. This feature calls back to some of the franchise's earlier installments, when legends like Ezio could call on members of the 'Brotherhood' to help in a fight. In Shadows, some of these allies are not easy to find, requiring players to really lean in to exploration and completing side-content. Many players will also wonder whether there is any way to upgrade allies once you recruit them, especially as combat increases in difficulty. In this guide, we'll answer that very question, and show you how and where you cantrain allies in Assassin's Creed Shadows.