It is a Collection of memoirs of former Soviet Union military advisers that directly took part in the progression of Vietnam War as a brothers-in-arms of Vietnam North during the years of 1965 - 1973. It is the first time when a Collection of such kind was unveiled officially. It provided a readership with matters & events that up to now have been known by a few people. The Collection composed of a lot of an useful supplementary materials for military historians in particularly. Here are some the most representative excerpts from the Collection: 1 - A secret mission to Vietnam (VN). By N.N. Colexnik. 2 - A typical works of the chief engineer in VN North anti-craft missile regiment. By A.I. Petrov. 3 - A notes of the Head of Soviet Union military advisers' group in VN. By B.A. Voronov. 4 - A launch of air-to-air missile XA-75 “Dvina” device. By M.I.Vorobiev. 5 - An experiment in Hanoi. By A.P.Moiseev. 6 - An ambush in the range of Tam Dao Mountain. By I.V.Bondarenco. 7 - Electronic war in VN. By P.A.Sacsatkin. 8 - VN war in a view of a Soviet Union anti-craft arm's staff officer. By V.Ia.Conacov. 9 - The land of Hai Phong habor. By N.I.Covalev.