Sentence:  After all , the average American as he lies and waits for the enemy in Korea or as she scans the newspaper in some vain hope of personal contact with the <WSD>front</WSD> is unconcerned that his or her plight is the result of a complex of personal , economic and governmental actions far beyond the normal citizen 's comprehension and control . 
Meaning of the word marked with <WSD> tags:  the line along which opposing armies face each other