One of the reasons why it is important that a squad sticks together is because by doing so enables them to do something that no Legend can do alone and that is to bring each other back from the dead. Once a character's health is depleted they will go into a downed state where although they are still alive their movements will be slow and they will be in need of medical attention. If the character dies before their teammates can help them there is one last thing that can be done to try and save them.
Each of the eight Legends carries a Legend Banner which they will drop when they die. This Legend Banner can only be picked up by one of their teammates and it they are able to take it to a Respawn Beacon they will be able to bring that Legend back to life. This respawning process takes time and if the resurrection attempt is successful the player will return to the game. They will however have no weapons or armour.