#FiveSentenceFiction: Feast

 In their millions they invade the huge organism, and they die in their millions, slain by the fierce defenders.

Yet their legions keep their assault, step by step gaining territory despite the enemy’s resistance, blind to their losses.

So small in proportion they are, a fraction of a millionth of the size of their target: invisible to the living.

Waves after waves they are pushed back, but already they feast on the corpses of the vanquished.

As I succumb to them I wonder if they are our ancestors: the most deadly fiend of all living creatures.

http://www.sciencedaily.com/releases/2012/11/121122152928.htm