A Small Dementor Puzzle

[Paul]

No: HPFGUIDX 18976

--- In HPforGrownups at y..., linman6868 at a... wrote:
> Hello all --
> 
> A question occurred to me as I was thinking over some of the recent 
> discussion of GoF, and I don't know if it's been addressed before, 
> but here goes anyway...
> 
> Mad-Eye Moody says in the Pensieve that the proper treatment of 
> Karkaroff would be to "hear his information and then throw him back 
> to the dementors."  However, Voldemort later in GoF exults to his 
> followers that he plans to call the dementors, "their natural 
> allies," to his side once more.  Dumbledore confirms this by telling 
> Fudge that Voldemort can give the dementors more scope for their 
> pleasures than Fudge can.  I can't remember whether it's the giants 
> Dumbledore says V. convinced to join him once before, or the 
> dementors (and I don't have GoF still).
> 
> So the question is, when did Azkaban come under the jurisdiction of 
> the dementors?  Was it continually so under VWI?  Did Voldemort fail 
> to get the dementors on his side the first time?  If Azkaban was 
> guarded by anything but dementors before, what were the guards?
> 
> Steve, is there something in your timeline that addresses this?
> 
> Lisa I., who loved Amy Z's clerihews!!!

I believe that in GoF that Dumbledore states that they should try to
get to the giants before Voldemort does. So, that would lead me to
believe that Voldemort was able to convince the giants to join him the
last time and that the dementors were their allies from the beginning.
I too would be interested in finding out what the status for guards at
Azkabon was during Voldemorts uprising.