The infantry senior sergeant serves as principal NCO in the operations section of combined arms or infantry brigades and higher level organizations. Provides tactical and technical guidance and professional support to subordinates and makes recommendations to superiors in the accomplishment of their duties. Serves as principal noncommissioned officer in an infantry battalion or higher to supervise the processing of operations and intelligence information in an infantry brigade or higher level unit. Plans, coordinates, and supervises activities pertaining to organization, training, and combat operations. Edits and prepares tactical plans and training material. Coordinates implementation of operations, training programs, and communications activities.