Sentence:  To give them an accurate eye and strength of arm, none under twenty-four years of age might shoot at any standing <WSD>mark</WSD>, except it was for a rover, and then he was to change his <WSD>mark</WSD> at every shot; and no person above that age might shoot at any <WSD>mark</WSD> whose distance was less than eleven score yards. 
Meaning of the word marked with <WSD> tags:  A target for shooting at with a projectile. (from 13th c.)