It's good that we are finally figuring out what Prussian Field Marshal, Helmuth von Moltke (the elder) knew almost 200 years ago. He devised a system to evaluate soldiers, a very simplistic explanation and chart is included with the link below.

Essentially what we define as toxic, he defined as dangerous, and felt those people should be eliminated from the Army at all costs because they cause far more harm than good.

http://soldiersystems.net/2012/05/27/kind-leader/

Von Moltke (the elder) is also considered as the creator of a new, more modern method of directing armies in the field, which is still used today. He also commanded by intention than by direct action, von Molkte felt that strategy needed to be adapted as battle progressed, so rather than having his staff officers be held to rigid direct action orders the had everyone working toward a series of goals, making adjustment along the way, sounds a lot like Agile software development.