General Wurtgang, the leader of the Martian Fleet, landed with the second wave of the invasion.  Looking around, he noticed the simple, graceful homes, well-tended gardens, and beautiful people in togas who handed out flowers to his troops.

"Where is the smoke?" he asked.  "Where are the corpses?"

"Sir, they offered no resistance," a young lieutenant answered.  "The Venusians treat us as guests."

"No resistance?  How womanlike.  Intern the men anyway.  We'll execute them tomorrow."

That night, the general and his troops helped themselves to the women, who responded enthusiastically by plying their captors with food, wine, and more sex than they could handle.  Obviously, these women had been starved for real men.

As General Wurtgang fell back onto the cushions to sleep, exhausted by the lovemaking, he reflected that this had been his easiest conquest yet.

Then he heard the screams and felt the blade slide across his throat.