The Thousand Orcs

The Thousand Orcs is first book of The Hunter's Blade Trilogy by R.A. Salvatore.

"''One dark elf. Two enchanted blades. One unknown enemy. And a horde of invaders.

It's been a long time since Drizzt Do'Urden has had to fight alone. When a ravaging mob of vicious orcs overruns the North and his friends are washed away in its evil tide, he must take matters into his own deadly hands."