The Pentagon considered developing a host of non-lethal chemical weapons that would disrupt discipline and morale among enemy troops, newly declassified documents reveal. Most bizarre among the plans was one for the development of an "aphrodisiac" chemical weapon that would make enemy soldiers sexually irresistible to each other. Provoking widespread homosexual behaviour among troops would cause a "distasteful but completely non-lethal" blow to morale, the proposal says.