Sentence:  From the east to the west coast of the Korean peninsula was a strip of land in which fear filled men were at that same moment furtively <WSD>crawling</WSD> through the night , sitting in sweaty anticipation of any movement or sound , or shouting amidst confused rifle flashes and muzzle blasts . 
Meaning of the word marked with <WSD> tags:  move slowly; in the case of people or animals with the body near the ground