Starkiller bowed before his master, Darth Vader. "Come, my apprentice, we must find a place to rest, I grow weary of this place." As one's view went out, they would notice the masses of dead foot soldiers piled in circles around them. Apparently one had stopped Lord Vader to make a sneering comment, and caught a lightsaber in the gut, which another guard saw and called the other guards.
Yoda was on a hilltop overlooking the city they were in, watching. "Watch them I must, or murder more, they will." Yoda said, holding his cane.