how do I win spoils? thank you

and it just appears at the beggining of my turn to pick that spoils right? There's no "button" to do that?
thank you ^^ I understood

so I have :
My Spoils ([bracketed] if owned): Lugo Ávila [Leiria] Cádiz Cantabria
Lugo - red ; Ávila - Blue ; Leiria - Red ; Cádiz - Blue ; Cantabria - Green.
And I'm yellow. What can I do with that ? How can I get a spoil that I want to?

and what was that?
2010-09-30 08:58:11 - rayo vk 1924 received 4 troops for 13 regions
2010-09-30 08:58:19 - rayo vk 1924 cashed in a group of Soria, Málaga, and Sevilla worth 10 troops
2010-09-30 08:58:19 - rayo vk 1924 got bonus of 2 troops added to Soria
2010-09-30 08:59:23 - rayo vk 1924 ...