And the first realm to be overrun was Dorthonion .
Possession of Dorthonion would provide Morgoth with a forward base easily supported from Angband while splitting the Noldorin forces in two , physically preventing any effort to unite forces against him .
The first realm to be overrun was Dorthonion .
Possession of Dorthonion would provide Morgoth with a forward base easily supported from Angband while splitting the Noldorin forces in two , physically preventing any effort to unite forces against him .