In this war, both the Etheric Academy and the Tower of Babel had people stationed.
The former was to further observe the efficacy of the Black Knight in the war; the latter...
The latter was probably just trying to make the final change to someone's thoughts, or to prepare in advance for the worst moment.
"... Miss Ziegler," the Count of Watson tightly held the black ring in his hand, his face full of unresolved heaviness, "Is it really... just do as you say?"
Ravenna's tone was as cold as ever, "I've already explained everything to you... never mind, I'll repeat it one last time."