Mai-HiME Episode 14
The school is under seige by the military and they are searching for all the HiMEs. Mai is able to escape and runs into Tate and Shiho and tells them everything that's been going on. Most of the HiMEs are able to escape to the underground caves where they meet up with Mashiro.
Well, after the more relationship-based ep, we have almost a completely action-based episode which reveals more of what's going on. Looks like things will get interesting from here...