1954年至1957年：埃尔斯贝格担任美国海军陆战队的步枪排长，作战官和步枪连长。 1957年至1959年：埃尔斯伯格继续他的学习，作为哈佛大学研究员协会的初级研究员，这是一个精英计划，旨在让有前途的年轻学生有机会获得奖学金。 1959年：埃尔斯伯格担任兰德公司的战略分析师。他后来写道，他接受了“在妄想之下的立场……有利于苏联人的’导弹差距’使得苏联突然袭击的问题成为最重要的问题挑战美国和世界安全。“他曾担任太平洋总司令或CINCPAC的顾问。 1961年至1964年：作为兰德公司的一名员工，埃尔斯伯格担任国防部和州政府以及白宫的顾问。他专门研究核武器，核战争计划和危机决策。1964年：埃尔斯伯格加入国防部，为负责国际安全事务的助理国防部长约翰·麦克诺顿工作。在这个角色中，埃尔斯伯格被要求研究越南战争的决策。 1964年和1965年：国防部长罗伯特麦克纳马拉命令麦克诺顿和埃尔斯伯格制定秘密计划，以升级越南战争。计划于1965年春季进行。1965年至1967年：埃尔斯贝格转移到国务院，并在越南服务。他的工作地点在西贡大使馆。他感染了肝炎并于1967年6月离开越南。1967年：埃尔斯伯格重返兰德公司工作，开始研究“1945年至1968年在越南的美国决策”，该文件后来被称为五角大楼文件。
美国哥伦比亚大学论文代写：越南的美国决策
From 1954 to 1957: Elsberg served as the rifle platoon leader of the US Marine Corps, the combatant and the rifle company commander. From 1957 to 1959: Elsberg continued his studies as a junior researcher at the Harvard Research Fellows Association, an elite program designed to give promising young students the opportunity to receive scholarships. 1959: Elsberg serves as a strategic analyst for the RAND Corporation. He later wrote that he accepted the “under the imaginary position… the “missile gap” that favored the Soviets made the sudden attack of the Soviet Union the most important issue to challenge the security of the United States and the world.” Serve as Commander-in-Chief of the Pacific or as a consultant to CINCPAC. 1961-1964: As an employee of the RAND Corporation, Elsberg served as a consultant to the Department of Defense and the State Government and the White House. He specializes in nuclear weapons, nuclear war plans and crisis decisions. 1964: Elsberg joins the Department of Defense to work for Assistant Secretary of Defense John McNaughton, who is responsible for international security matters. In this role, Elsberg was asked to study the decision of the Vietnam War. 1964 and 1965: Secretary of Defense Robert McNamara ordered McNaughton and Elsberg to develop a secret plan to upgrade the Vietnam War. It is scheduled to take place in the spring of 1965. 1965-1967: Elsberg moved to the State Department and served in Vietnam. His place of work is at the Embassy of Saigon. He was infected with hepatitis and left Vietnam in June 1967. 1967: Elsberg returns to work at RAND and begins research on “American decision-making in Vietnam from 1945 to 1968,” which was later called the Pentagon document.