Long Drive

Although both clans were assembling their armies with urgent haste, it was not an easy thing to move a military force across East Antarctica. The wilderness was infested with countless abominations, and Nightmare Gates were everywhere, making every route slow and dangerous. 

Clan Valor was in a slightly better position because they had coincidentally pulled most of their forces together prior to Mordret's revelation, in order to destroy a migrating horde of Nightmare Creatures. Still, there were many warriors and assets that had been left behind in the siege capitals, who now had to join the main body of the great clan's contingent.