HeavenShallBurn said:
But if I were the British government how would I take him down?
I'd use their SAS and commandos and information from aurors and others to identify Deatheaters then take them out with PGMs or cruise missiles at their homes.
None of that. Those are bad. How *I* would do it:
First, put the death penalty back on the books for a six-month period, renewable as necessary by the Wizengamot. This provides legal cover, as the wizarding world doesn't *have* a death penalty; their dementor soul-kissing is the closest thing, and as the dementors are now Voldy's followers, that's not practical. Being a Death Eater is a crime, of course. In theory, the punishment might include possibility of prison terms, but as a matter of policy, anyone with a Dark Mark should not make it to jail.
Second, research some method of temporarily suppressing Disapparation in a given area. Deploy this in large numbers with the teams; we don't want DEs to be able to escape easily.
Then, instead of bombing the crap out of them, have a nice lightning raid on all identifiable Death Eaters (start with the ones that got off in the last war, and proceed accordingly). Of course, we may not have information on all of them; if the Ministry did, they would deploy aurors and have it done with. Also, we don't want to blow them up, as we need intelligence about their compatriots. It's not wise to just summarily kill them (for example, Narcisa isn't *necessarily* a Death Eater), but any that possess a Dark Mark who you can capture are interrogated under veritaserum and then summarily executed, and tossed out the back of a cargo plane over the mid-Atlantic in weighted canvas bags. Those w/o the mark are still interrogated under veritaserum and then imprisoned somewhere unpleasant should they incriminate themselves in questioning. Those that are innocent should either be released or kept in custody for their own safety.
Results of the spot interrogations can and should be used to conduct further follow-on raids, as soon as the intelligence can be processed, so as to catch the next targets by surprise as much as possible. Ideally, you would get the data and then direct a follow-on team to the next site within minutes of the conclusion of the first raid.
If and when you find Voldemort, do the same thing. The first raid will likely fail. Undoubtedly, the wizards will try and fail to impress on the Muggles that he's dangerous even without his wand; the wizards' hysteria regarding him will see to that.
Unfortunately, I'm uncertain how his horcruxes would work, if they'd keep him going while suffering mortal wounds (i.e. frenzied berserker lich), if they'd res him after a few hours/days in an intact body, or if they'd destroy the old body and rebuild a new one. We know that when he's disintegrated they have to help rebuild his body, but we don't have any more data. If he resses in the old body, you're free to use lethal force on him, and just take slap him in irons when he gets back up.
After the second raid, once he's down but "alive", knock him out with pharmaceuticals and keep him comatose until such time as the horcruxes are found and destroyed. At that point, you're free to execute him. Ideally, he'd be incinerated and his ashes scattered over multiple parts of the globe; not only does it make it harder for him to reconstitute himself if you missed a horcrux, but it also denies any fugitive DEs a rallying point.
Removing his hands, eyes, and tongue are probably good ideas to make sure he's unable to act when he wakes up (as, of course, he's likely to be able to wake up at some point). The only reason not to do that (aside from squeamishness), would be that he might be of some value in interrogation ("So, these 'horcruxes', we want to know where they are.").