Republican-led legislatures and governors seeking to put the brakes on puberty blockers, cross-sex hormones and surgical removal of healthy breasts and genitals for gender-confused minors have a new weapon from the U.S. military. Nearly a third of "transgender and gender-diverse" patients who received so-called gender-affirming hormones had stopped taking them within four years, according to a study of children and spouses of soldiers who received treatment through the U.S. Military Healthcare System. Those most likely to stop were females and adults, which could be seen as supporting theories that the explosion in gender-confused teen girls is driven by "social contagion"...