러시아 육군 장교 즈베긴쪼프(А. И. Звегинцов)왿� 꼬르프(Н. А. Корф)의 한국 북부지역 조사왿� 군사개관 (The Military Supervision in the Northern Region of Korea Carried Out by Russian Officers A.I. Zvegintsov and N.A. Korf)

1898년 즈베긴쪼프의 러시아탐사대는 러시아육군참모본부의 대일전쟁대비책과 연결되어 한국 북부의 지형과 지리에 관한 체계적인 조사를 수행했다. 이 탐사단은 구성 인원과 분야에서 러시아지리협회 사상 가장 대규모였다. 『한국 북부지역의 군사개관』은 즈베긴쪼프왿� 꼬르프가 탐사하고 그 결과를 정리한 기록물이다. 이 책에서는 한국의 주요 국경으로 압록강과 두만강을, 한반도 인접 해양으로 동해, 황해, 대한해협을 조사하고 이들이 갖는 지리적, 군사적 의미를 파악했다. 이를 통해 일본과의 전쟁을 대비하여 극동지역에서 러시아의 군사 활동 상황을 규정했다.

Russia considered that it had an overwhelming naval power because the enemy Japan in the Far East was an island nation, and mapped out not only a land strategy but also a maritime strategy. The military overview concluded both land and marine surveys on the Korean Peninsula, based on these two strategies.
The military surveillance summarized the coast of the Korean Peninsula.
This section was written on January 24, 1904. The Korean coasts flow into the East Sea, the Yellow Sea, and the Korean Strait. The meaning of these three oceans is diversity depending on the characteristics of coastal regions.
The southern branch line of Dongcheong Railway, which was built toward the Yellow Sea, maintained the superiority of the Yellow Sea basin.
The military overview suggests that Russia should take into consideration the tactical significance of the East Sea in many ways, since the East Sea will soon become a naval battlefield if Korea and Russia are regarded as battlefields during the war between Russia and Japan. First, in the case of Russian defense operations, the activities of the Russian fleet should be as far away as possible from the Vladivostok blockade in the event of overwhelming Japanese military forces. In the case of Russia‘s offensive operations, the Russian fleet's operational goal was to secure a back ferry from Vladivostok to Sinpo port. In this case, the position of Russia can be advantageous compared with that of Japan. The reason for this was that all the Russian rear ferry from Vladivostok to Sinpo port was closer to Vladivostok than any other bases in Japan.
Japan occupies a favorable position with regard to its occupation of the Korea Strait and landing in Korea. Russia cannot occupy an area that is a condition for the construction of an offshore base in Korea if it exits only Broughton. Because Busan and Masanpo are under the indirect influence of Japan. Vladivostok, the definitive marina of the fleet, can command the East Sea, disperse the Japanese forces along its bases, and support the Pacific during the Russo-Japanese War. Vladivostok raises the value of cruisers' combat bullets and cruisers that require fuel while enhancing the fleet value of the marina. From the other side of Dongcheong Railway, the position of Vladivostok can create a great commercial value in a modern sense.
In the early days of the Russo-Japanese War, Japan was expected to secure a clear command of maritime command, and the superior maritime command would move to the land. Therefore, military operations in Russia must be defensive in the first half of the war. It concluded that the most important task here was an immediate mobilization of Russian troops.