Valor Chests can be earned both as a reward from the Path of Valor and for collecting Valor Points once all the Milestones have been reached. Players can collect additional Valor Chests if they gain more Valor Points after completing all the Milestones of the current Path of Valor.
There is a tracker under the rewards tab in the Path of Valor which, once the player has reached the 50th milestone, will begin tracking additional Valor Points. After every 1000 additional Valor Points, a player can gain a Valor Chest. At the end of each Path of Valor, the collected Valor Chests are automatically claimed and the Valor Points are reset to 0.