Please what is wrong with this paragraph?

Supervised material, and maintenance management for Central and South America, supporting more than 10,000 personnel both military and civilian. Managed materiel and equipment managers and service support personnel using expert planning, organization, and supervisory skills providing optimum logistical and maintenance support to a diversified organization. Reduced the time normally required to activate a company headquarters that provided administrative and logistical support for 350 personnel from 12 to 4 month.