Active reserve (KGB) officers with a military rank who worked undercover in the Soviet Union. "Trusted contacts" were high placed civilians who collaborated with the KGB without signing any official working agreements, such as directors of personnel departments at various institutions, academics, deans, or writers and actors. Informers were citizens secretly recruited by the KGB, sometimes using forceful recruitment methods, such as blackmail. The precise number of people from various categories remains unknown, but one of the estimates was 11 million "informers" in the Soviet Union, or one out of every eighteen adult citizens The active reserve was established by Yuri Andropov in
1967 in the Vietnam War Junction City was an 82-day military operation conducted by United States and Republic of Vietnam (RVN or South Vietnam) forces begun on February 22, 1967, lasting until May 14, 1967. It was the largest U.S. airborne operation since Operation Market Garden during World War II, the only major airborne operation of the Vietnam War, and one of the largest U.S. operations of the Vietnam War. Operation Union was a search and destroy mission in the Que Son Valley carried out by the 1st Marine Regiment to engage the PAVN 2nd Division. Launched on April 21, 1967, the operation ended May