*** servius swore as his foot was caught , looked down , kicked at the leg that lay across his way , and saw it flop back ; balanced himself again , saw a gleam of light through the narrow eye-slit of an enemy helmet , pushed his shield forward to shove the man back , brought his arm up to stab with his long spear , saw the man fall , and pulled the spear back , and realised from the heavy softness under his feet that he 'd trodden on a body , friend or enemy he could n't tell ; all this in a moment , and then he was moving again , as the line pushed forwards .