The Day of Astronautics on the website of the Russian Defense Ministry published archival documents from the time of the officer’s service of Yuri Gagarin in the army. Among the documents there is a record-keeping map, a characterization from the Cosmonaut Training Center.
For example, the description indicates that Yuri Gagarin is a peasant, physically well-developed, learns the material easily, and tests with a total score of 4.8.
In the registration and service record, chronologically, the positions on which Gagarin served and the duty stations, as well as socio-demographic data, are indicated.
With the rest of the documents you can read through this link . There are orders on personnel, about Gagarin’s appointment as a test pilot of the Air Force, and so on.