If u retreat or force close the app in a TW or GA battle this squad will go back at the same point it was when u started the match.
Its usefull when u face for example a trooper, ewok, quira, NS, etc. Team and u get crushed so if u actually finish the battle next try they will stay not only full HP/prot also 100% TM xD so u (or ur guildmates) will have a hard time against them in the next try...
But if u are able to beat 2-3 toons or at least the leader or something its better to finish the battle (or let it timeout) so next try it will stay at the same point it was when u finished the match xD