This episode start with a prophetic dream, with the First Slayer telling Buffy 'It's not enough' and the episode goes on to show why that is true.
Anya and Spike are discussing the merits of demon v's human, with some heavy flirting from Anya. They run into a demon who they have to run away from. Spike later defend his action to Anya, framing it as the only logical thing to do, which Anya doesn't buy for one moment.
We are shown the army of girls being drilled by Kennedy. This is were Kennedy calls Chloe a maggot. Then we see that even Kennedy is just a kid playing at being a soldier as she's so gleeful about the act she's putting on.
The school/hellmouth is devolving quickly and Robin can do nothing about it. Andrew, who has useful skills, is wasting his time on baking and white boards. Willow is, as Kennedy says, the most powerful person they have, yet she is incapable of or too scared to use her powers. Anya and Xander admit that all they bring to the table is sarcasm

Dawn is at least tryng, but doesn't have the knowledge needed.
Basically they are an incredibly useless bunch and my sympathy lies totally with Buffy. She's being told by Joyce, The First and The First Slayer that she is going to lose this battle and nothing they do will be enough. She's feeling guilty that she isn't going to be able to save all these girls, and she looks around at what she has, which isn't very much. It must be overwhelming for her.
Then Chloe kills herself. Chloe allows the First to intimidate and brainwash her. No wonder Buffy is angry, they've allowed the enemy in
again. Buffy alone takes the responsibility to bury the body, that's the respect she pays to Chloe. This is the groups lowest point, they have already been defeated in this moment and the First has won. Buffy finally turns into the leader she needs to be and gives them all some home truths. If I were her I'd want to slap those girls silly, they've seen what they are up against and they are still playing. It's just not good enough. And that goes for Spike and Willow too
The second part of the episode is about the group realising what power is, where it comes from and what they need to do to survive. Buffy rejects the Shadowmen's offer of more power, refusing to become less human even if that would mean securing survival. Is survival worth it if you have to become in-human to achieve it. Spike's only way to survive is to put his coat back on, even though we see Robin questioning that decision. The coat is necessary for the greater good and without that coat and all the connotations it carries, the First Evil may never have been defeated.
When Willow uses her magic, Kennedy stops playing, stops wtih the glee and finally realises what real power actually means and what it can do. Willow sacrifices her own security and wellbeing to serve the greater good. She, like Spike, has to reconnect with her darkness to be useful in the fight.
The more I see this episode, the more I like it and the more I understand Buffy's predicament. To get it done, to win this war, you have to sacrifice. That sacrifice might be your own wellbeing or the wellbeing of others, but there is always sacrifice and you can only hope you've made the right choices at the time.
There are some other nice moments in the episode, the Anya/Spike flirting juxtaposed with Buffy/Robin flirting. Robin's line 'You're redefining the job and that takes guts' which is a series arc. I like that Spike is shocked that Buffy has told everyone about his soul. Of course I love the Buffy/Spike interaction, with Buffy trying to make Spike angry so he'll finally enter the fight and be some use, telling him she needs him to be dangerous and he can do it even with a soul. She needs all of him, the demon and the soul and gives him permission to be both souled and dangerous.
Dawn is great as the mini-watcher and is probably the most useful member of the team, even though she's the one without powers. I like that everyone tries to talk Buffy out of going through the portal, because they are scared and unwilling/unable to try anything useful, as when Anya suggests leaving Buffy in the other dimension is the safest choice. Love the end shot of the pit full of Turok-Han. This is what they are up against, and to win they have to be more than they are.