The main purpose of this legislation is to formally establish the United States Department of War as a functioning government entity by codifying an existing executive order. This move aims to restore the historical name and role of the department, which was originally responsible for military affairs before being renamed the Department of Defense. The key provision of this legislation is the codification of Executive Order 14347. This means that the executive order, which outlines the restoration of the Department of War, will now have the same legal standing as a law passed by Congress.