ABSTRACT
The Red centre in the plain of Hopei was raided by a Japanese punitive expedition, and the guerrilla headquarters in the mountainous and very difficult Wutaishan area of eastern Shansi was occupied by another Japanese force operating in this area. There was a marked set-back of guerrilla activities in northern China after the great stimulus they received in the summer from the Changkufeng affair in northern Manchukuo. The guerrillas have adopted a new practice of pulling down the city walls within the areas occupied by them, in an effort to allow the Japanese less shelter when they eventually return in force. On the whole the temporary raiding of guerrilla centres does not amount to very much, as the basic principle of guerrilla tactics is withdrawal in case of attack. The essence of guerrilla tactics is to obtain through spies full knowledge of the enemy's dispositions and to attack suddenly and with fortuitous superiority when an enemy convoy is entirely unprepared.
