In the case of the sites with gay pornography, military investigators will be tasked with determining whether active-duty troops were involved in conduct that could bring discredit on their service, a potential violation of military law. The Marine Corps is not the only service affected. Images of men in the uniforms of sailors, soldiers and airmen also appear on an array of Tumblr sites. Similar to the Marines United case, it is unclear whether men appearing in the images - some photographed engaging in sex - provided consent to have their images shared publicly. Victims of so-called revenge porn in the Marines United case have limited protection under military law if the photographs or videos were taken originally with their consent. The Pentagon has established a joint military task force to handle the growing investigation, said MaryAnn Cummings, a spokeswoman for the Naval Criminal Investigative Service. Navy, Marine, Army, Air Force and Coast Guard investigators have "established a multi-service task force to expand the investigation," she said. Military officials briefed Congress on Thursday about the Marines United scandal, in which hundreds of active-duty Marines have viewed photos of servicewomen taken without their consent and cyberbullied some of them. On some of the gay Tumblr sites, fully dressed troops appear in photos with their name tags visible. At least one such Marine did not agree for his photo to be republished amid a sea of images of men having sex, according Lt. Eric Dent, a Marine Corps spokesman.Īir Force investigators also are now combing through a number of websites to look for victims, said Col.