During which war did General John J. Pershing recommend that NCOs be provided with separate mess facilities?

The correct answer for the question that is being presented above is this one: During World War I, General John J. Pershing, commander of the American Expeditionary Forces, recommended upgrading NCO leadership training, and provided non-commissioned officers (NCOs) with separate mess facilities.

World War I--NCO's are non-commissioned officers.

John Pershing saw the prestige foreign officers received in Europe and believed American officers should be provided the same privilege. He wanted NCO's to be provided separate training facilities and mess halls as an award and symbol of their status in the armed forces.