Grask
From Warhammer 40k - Lexicanum
Grask is a Cadian General, who served in Warmaster Ryse's Imperial Crusade and took part in the campaign for Rellion Five.
There he led the Cadian 45th, and several companies from other Regiments, to clear the enemy held Shima Forest. Ursarkar E. Creed warned Grask against doing so, but as Creed was only a Colonel then and Grask had a hundred years more experience, as well as an arrogance problem, Creed was ignored. What followed was a horrific battle and, while Grask emerged victorious, many in the Crusade thought Shima was not worth the large number of lives it took to secure the General's victory.[1]