Gnomes are the most heroic & best race of the Alliance.
They are loyal friends and allies in battle. They aided the humans in the second war immensly with troops and technology, and during the third war, while they didnt show up themselves, they sent basically everything they could in terms of technology and resources to aid the war against the legion.
Only afterwards did the rest of the Alliance discover their troubles they had in Gnomeregan with the troggs, and losing the majority of their population. Yet the gnomes had decided that the Alliance had more important matters to attend, so they sent what they could and stood alone to not bother their allies.
Gnomes are the unsung heroes of the Alliance who selflessly aided them whenever they could, asking nothing in return, even when retaking Gnomeregan, since it was their fight.