Reprint of 1945 US Chief of Military History study. Translated from original Japanese. Monograph deals with military operations in North China from the time of the outbreak of the China Incident in July 1937 to the outbreak of the Pacific War in December 1941. It discusses the China Incident to the Yangchu Operation, the Hopeh, Tungshan and Wuchang-Hankou operations, Operations during 1939, 1940 mop-up options and 1941 mop-up operations in the Shansi Province. It contains charts detailing troop distribution of the 1st Army, its mop-up operations in the Wutaishan Mountainous District and plans for disposition of 12th Army troops. From the foreword: This monograph deals with military operations in North China from the time of the outbreak of the China Incident in July 1937 to the outbreak of the Pacific War in December 1941.As the basic Japanese document from which this monograph was written was prepared by Lieutenant General Takuma Shimoyama, former staff officer of the North China Area Army, Lieutenant General Gun Hashimoto, former chief of staff of the First Army and Lieutenant Colonel Heizo Ishiwari, former chief of the Military History Division, Army General Staff largely from memory, it was necessary for the Military History Section, HQ AFFE, to conduct extensive research in order to evaluate the information, check and correct facts and dates and, where necessary, to add further pertinent data and/or explanatory footnotes for clarity. The writer was assisted in the research by Hachiro Tokunaga, formerly a lieutenant colonel in the Intelligence Section of Imperial General Headquarters.