Sentence:  <WSD>Brooding</WSD> about future wars , the Field Marshal has this to say : `` The Asian fighting man is at least equally brave [ as the white ] , usually more careless of death , less encumbered by mental doubts , less troubled by humanitarian sentiment , and not so moved by slaughter and mutilation around him . 
Meaning of the word marked with <WSD> tags:  think moodily or anxiously about something