Sentence:  He, however, was nothing more than another <WSD>red shirt</WSD>. Michael still tried to imagine what was running through that kid's mind as he charged head long into the mob, his shouts of glory quickly turning to screams of terror as they ripped him apart. 
Meaning of the word marked with <WSD> tags:  A minor character or member of a group, especially one who is expendable or likely to be killed.