Military command recognized humanization of the enemy as a threat to combat effectiveness.

Evidence

Both the Allied (British and French) and German high commands had a major problem on their hands. The military feared that fraternization had humanized the combatants on both sides. Some of the field officers warned the soldiers in the opposing trenches to stay low when hostilities resumed. — Albert Bandura, Moral Disengagement, 661

Categorization

• corroborated: 2 independent passages support this claim — Albert Bandura, Moral Disengagement: How People Do Harm…, 661