... Let's work with a canon scene, and different ways to handle it in fanfic. The obvious choice, action-wise, is the battle at Hogwarts, since Harry has to learn about it second-hand, after we know the outcome and everyone has calmed down. But there are all kinds of alternate points of view that could be written on the scene.
In canon, the sequence as related is:
- Ron, Ginny, and Neville go up to watch the Room of Requirement. An hour later, Malfoy emerges with the Hand of Glory and releases the Peruvian Instant Darkness Powder, slipping by them.
- Ron, Ginny, and Neville run into Order members almost immediately and tell them what happened. They find Death Eaters running toward the Astronomy Tower. A fight breaks out, and Gibbon runs for the stairs to set off the Dark Mark. He runs back downstairs and is hit by a Killing Curse that just missed Remus Lupin.
- Hermione and Luna have been watching Snape's office and don't know what's happening until Flitwick runs down shouting about DEs in the castle. He goes in and Snape Stuns him, then tells the girls to stay and watch him. Snape runs for the Astronomy Tower.
- The Order is in trouble. Bill has been savaged (timeline unclear) and Neville is hurt. Draco's slipped by them, and more DEs run past, one blocking the stair behind him with a curse (Neville was hurt running at the curse and being thrown). No one can break through until Snape runs up. "The big Death Eater" does a curse which causes the ceiling to collapse and the curse to crumble, and everyone rushes forward. Snape and Draco just pass them. Then the DEs and Greyback (an interesting juxtaposition from Tonx, making me wonder about Greyback's status in Voldemort's organization), and they're fighting again, and Snape shouts "It's over."
- In Harry's POV, we've also seen the burning of Hagrid's hut and a group of Hufflepuffs in pajamas who don't know what's going on at all, but are hearing things.
What strikes me about this complex sequence in terms of action is what very different stories each person must be living in, and the focus will change for each participant, or at least each major group of participants. Even in re-telling in the calm after the storm, while everyone is focused on Dumbledore's death as the major point, they're all seeing very different moments of importance and experiencing different kinds of emotions. Ron and Ginny appear to be fuming at Malfoy (not unusual), but also dealing with his use of one of the twins' products. Hermione feels stupid and duped. Lupin tries at least once (in regard to Hermione) to make her see things more reasonably, but has also had the most emotionally unguarded moment we've seen from him thus far. Tonx gives straight action narration, focusing on who's been hurt. And one could imagine how utterly conflicted Draco is, or how ravenous Greyback is.
So I guess the theoretical questions are:
Whose POV would you choose to narrate this action sequence in a fic?
Why would you choose it?
What would be the primary focus of the action from that character's POV?
What would be the tone?
And--hey, a total writer question--how, in a snippet of 100 words or less from anywhere in that scene, would you portray that tone?