Although only technically being active for a week, Divide was underneath the Daybreakers original base, thus already in use before the complete change. It was decided by newly appointed Daybreaker leader Nora Bat that they move base to a different location, but Head Technician Matthew Stark suggested the underground base.
Almost immediately, everything was packed up and 'moved down-stairs', and Divide became the new headquarters. It wasn't until a week later that Stark detected a bomb in the medical bay wall. The evacuation of Divide was only semi-successful, and the destruction of the Daybreakers head base crippled them.