What is "r.v.s."

R.V.S. is a short novel by Arkady Gaidar, first published in 1926, in the Perm-based newspaper Zvezda (issues 83-97) which the author worked as the correspondent of at the time. Also in 1926 it was released as a separate book by Gosizdat Publishers. This was only the 2nd published work by Gaidar and his first one addressed to the young readership. The book's title stands for Revvoyensovet (Реввоенсовет, Revolutionary Military Council).