The Magic Council is having a meeting about the mysteriously-disappearing dark guilds when they're attacked by a powerful force, the harbinger of the Tartarus threat that will derail Fairy Tail's recent relative peace and quiet.
I don't know. However, 
building up their military force
لا أدري. لكن يتباذر إلى الذِهن أنّهم يبنون قوّةً
عسكريّة ويتخلّصون من الأعضاء غير المرغوب فيهم