A small doc group to Maria Mikhailovna Demidova, major of the medical service.
First, we have her 1947 MVD POW camp ID, issued to her as a medical service captain:
HEr reserve officer ID:
Born on 21 April 1921 in Mulevka, Tula Oblast, Nationality: Russian, dock issued by Leninsky RVK of Lvov.
Graduated in 1941 from 2nd Moscow Medical Institute, Medical treatment Faculty, had no military education.
Was promoted to the rank of Major of the MEdical
Service by the MVD order 695 of 26th MAy 1955, currently retired, took military oath 5th November 1941
Military service with two intervalls:
From 26.10.1941 to 13.09.46, from 4.12.1946 to 1.01.1961 and from 25.12.1963 to 3.07.1968
As:
Physician-surgeon 10.41-06.43
Chief of the operating department 06.43-07.46
Commander of the sanitary platoon 07.46-09.46
In reserve 09.46-12.46
Physician-surgeon 12.46-01.61
In reserve 01.61-12.63
[Various] Medical functions 12.63-07.68
Participant of the GPW since 26.10.1941 to 25.01.1942 and from 12.05.1942 to 18.05.1943 as: physician-surgeon.
Retired on 3.07.1968 by the order of the chief of the directorate of protection of the public order of the City of Lvov [nr] 55 for retirement [of servicemen] (for the reason of illness)
I also have her husband's University of Marxism-Leninism diploma which shows him in a gimnasterka with sewn-on pockets (not sure if it's visible on the photograph), suggesting that he also served with the NKVD/MVD
And after half a year I get a confirmation that Demidova's husband worked for the MVD.
Here's his 1969 MOOP pensioneer ID I got from the same source. It states that he worked for 30 years and was a lt. colonel of the interior service.