Complex sentence: He was formerly the Chief Engineer of the Horde engineering works in Durotar and oversaw the construction of the city of Orgrimmar, and while keen to remain neutral towards the Alliance, he has no love for them and retains strong relations with the Horde.
Split into simpler sentences: He was formerly the chief engineer of the Horde engineering works in Durotar, and he oversaw the construction of the city of Orgrimmar. While keen to remain neutral towards the Alliance, he has no love for them and retains strong relations with the Horde.