Complete the mission, though I be the lone survivor. Never leave a fallen comrade to fall into the hands of the enemy.

-Anonymous
  The Ranger's Creed, quoted in the NewYork Times, 25 Oct. The Rangers, a US  Army unit, had stayed to guard the body of a pilot fatally caught in a downed helicopter in Somalia.

   The stubborn spearmen still made good Their dark impenetrable wood, Each stepping where his comrade stood The instant that he fell.

-Scott, Sir Walter
  Marmion, canto 6, stanza 34.