To deeply explore and exchange academic and engineering issues related to large models, decision intelligence, command and control model construction, wargaming, and other fields, the "3rd National Conference on Large Models and Decision Intelligence (CCLD 2026)", sponsored by the China Institute of Command and Control (CICC), and co-organized by the CICC Special Committee on Large Models and Decision Intelligence, the CICC Special Committee on Intelligent Command and Control System Engineering, the CICC Special Committee on Intelligent Game and Wargaming, as well as the School of Systems Engineering at National University of Defense Technology (including the National Key Laboratory for Big Data and Decision-making, the National Key Laboratory for Information System Engineering, and the National Key Laboratory for Digital Intelligence Modeling and Simulation), Sun Yat-sen University, and South China University of Technology, will be held in Guangzhou from November 4-6, 2026. The conference will invite renowned experts in the field to give invited lectures and jointly discuss relevant academic and engineering issues. Experts, scholars, and scientific and technical personnel engaged in related technical fields are welcome to actively submit papers and participate in the exchange.