The DA 2166-9-1 form serves as a crucial tool for evaluating the performance of Non-Commissioned Officers (NCOs) within the United States Army. This evaluation report is designed for the rank of Sergeant and is governed by Army Regulation 623-3 and DA Pamphlet 623-3. It encompasses several key sections that ensure a comprehensive assessment of an NCO's performance and potential. The form begins with administrative data, including the NCO's name, Social Security Number, rank, and unit information. Following this, the authentication section requires signatures from both the rater and senior rater, affirming the accuracy of the evaluation. The duty description section outlines the principal duties and responsibilities of the rated NCO, providing context for the evaluation. Performance is assessed across various attributes, including character, presence, intellect, leadership, development, and achievement. Each attribute is rated as either meeting or not meeting standards, with space for additional comments. Finally, the senior rater provides an overall potential assessment, comparing the rated NCO to peers and outlining future assignments. This structured approach not only facilitates a clear evaluation process but also underscores the Army's commitment to professional development and accountability.