近两年来，中国近代军事史研究更为深入。旧民主主义革命时期军事史研究成果主要有：林则徐“以守为攻以远待劳”防御思想讲长期以来史学界评价甚高，称之为“积极防御思想”，或“积极的海防战略思想。”有的作者指出不同意见，认为林则徐这里提出的防御思想，仅仅是‘做役防 In the recent two years, the study of military history in modern China has been more in-depth. The achievements of the research on military history in the period of the old democratic revolution are as follows: Lin Zexu’s long-term evaluation of the defensive thinking of “keep for a long time to defend labor” has long been regarded as “active defensive thinking” or “active defense strategy of sea defense” "Some authors pointed out different opinions and think that the defense ideas proposed by Lin Zexu here are only ’