Sentence:  Methinks I see their sabers as they flashed in battle's sun, I seem to see the <WSD>warlight</WSD> fall on bayonet and gun; Before the farm-house gate I stand and listen for their tread, Forgetting that the mighty camps are guarded by the dead; 
Meaning of the word marked with <WSD> tags:  The light produced by acts of war, such as exploding bombs.