The DA 2166-9-1 form is a critical tool for evaluating the performance of Non-Commissioned Officers (NCOs) in the U.S. Army, specifically for the rank of Sergeant. This evaluation report, governed by Army Regulation (AR) 623-3 and DA Pamphlet 623-3, encompasses various sections designed to capture essential administrative data, authentication details, and comprehensive performance evaluations. In the first part, administrators must fill out crucial information such as the NCO's name, Social Security Number, rank, unit, and the period covered by the evaluation. The form also requires signatures from the rater and senior rater, along with their contact information. Performance assessment is detailed in subsequent sections, where the rater evaluates key attributes such as character, presence, intellect, leadership, development, and achievement. Each attribute is rated with clear standards, ensuring that evaluations are both fair and thorough. The senior rater provides an overall potential assessment, comparing the rated NCO to peers. This structured approach not only promotes accountability but also aids in identifying future leaders within the Army. Understanding the DA 2166-9-1 form is essential for all involved in the evaluation process, as it directly impacts career progression and professional development.