The Marine Expeditionary Unit (MEU) SMARTbook is designed to be a reference for MEU and PHIBRON Commanders, MEU and PHIBRON staffs and the commanders and staffs of the Major Subordinate Elements (MSE) and Naval Support Elements (NSE) of the ARG-MEU team. This is the 3rd edition of the MEU SMARTbook, updated for 2020 with 34 pages of updated/additional material and a return of the original GBC plastic-comb binding.