While tanks were securing ground in downtown Baghdad their TOC, which was 11 miles away, received a direct hit from an unguided surface-to-surface missile. It KIA a few soldiers, destroyed several vehicles, a lot of equipment, and shut down the TOC completely for over an hour. Now, remembering back when I was just a ROMAD radio operator I was told never to transmit more than I had to, and that was just with the small radios available at the time. Sometimes we forget the basics. I guess the TOC was transmitting like FoxNews and an unguided missile became a guided missile. Apparently, someone was on the ball and knew in what direction to fire that missile. Ironically, the TOC was celebrating their brigade's morning advancements at the time of the strike. The rest is history. Lesson learned but how to prevent it?