Gratney

Gratney
Political and military information
Notable info:	Helped develop the Gratney-Walis Hierarchical Aptitude Score

Gratney was a human scientist. Along with Walis, Gratney developed the Gratney-Walis Hierarchical Aptitude Score, a score used at Unified Combined Military Boot Camp to evaluate a recruit's command potential.

List of appearances

• Halo: Evolutions - Essential Tales of the Halo Universe
  • The Impossible Life and the Possible Death of Preston J. Cole (First mentioned)