HEIDELBERG, Germany — They may hardly recognize the place. As members of the Army’s V Corps Special Troops Battalion prepare to leave for a second tour of Iraq in January, Lt. Col. Mark Gorton told soldiers Wednesday that plenty has changed since they last visited Baghdad. In the roughly two years since the Heidelberg-based headquarters unit helped lead the blitzkrieg invasion of Iraq, accommodations in the capital’s Camp Victory have come a long way. “When Fifth Corps first established Victory, it was a very different place,” Gorton said at a mandatory deployment briefing for soldiers and families. “Nothing worked, it...