I thought you may be interested in what I have gleaned so far
from notes taken from verbal translations of the statements of my grandfather, grand uncle, and my aunt, who was 20 years old at the time of the Red Army invasion. Please bear with me as this is not set in stone yet. Some of the dates may be off slightly. I will be combining the statements of all three, but I wanted to begin with my grand uncle's military standpoint first. He lived in Czabarowka, pow. Kopeczynce, woj. Tarnopol, and was 36 or 37 years old at the time of invasion.
On 17 September 1939 he observed the invasion while on duty with the Pulk Piechoty, PP. The PP is an infantry regiment. First came the tanks scattered, others came in columns of large trucks and possibly Jeep-type vehicles or cars? One of the trucks came to a sudden stop and four Russian soldiers jumped out, saying, "Hands up! Drop your weapons!" This the Polish soldiers did and were taken by truck to Husiatyn where they were put on border security. Of course, as soon as the Russians left, the Poles escaped. I would assume the primary reason for this was because they did not want to fight their brother Poles.
Back in Czabarowka, police officers came and demanded that his uniform, arms, and ammunition be turned in. He turned everything in except his uniform jacket and boots.
In the afternoon of December 10, a small band of Ukrainians attacked and stole from his farm: 2 horses, 4 pigs, 3 cows, chickens, 1 hay wagon, potatoes, beets, wheat, and various other items and livestock.
After the Soviet invasion, the Polish people were afraid and always panic-stricken. People felt that they could die at any time; lives were not secure. When the Russians came to Hallerczyn in October 1939, the Ukrainians were content since they were "freed" after 20 years of Polish oppression, according to the Russians. The Soviets told the local people (I assume the Jewish and Ukrainians), "under your Polish lords, you were hungry and didn't even have shoes for your feet until liberated by us."
Wherever Russian soldiers appeared, they always asked the whereabouts of the Polish Army. From the first moment, the Red Army behaved arrogantly. They confiscated money, crops, or food from the people, not caring whether or not the person had anything to spare. Some confiscated goods were put in storage. Sometimes they took items from Poles and gave them to poor Ukrainians.
The NKVD - The NKVD came to Polish homes without notice. They shouted, "hands up!" They asked, among other things, "How did you treat your brother/comrade Ukrainians?"
At meetings, in a chorus, Ukrainians would raise both of their hands for Poles to be deported to Siberia. The Ukrainians were also asked to spy and turn in the Poles, which they did. My aunt named a particular person who said, about my grandfather, "He belongs to Polish organizations; he was responsible for building the church; he is a politician." I don't know whether he belonged to Polish organizations or clubs; he probably at least belonged to veteran organizations. He was injured in World War I; he had shrapnel in one of his lungs. Because of this he had what we call in the US "disabled veteran" status. (I just found out about the disabled veteran status last weekend while exchanging information with Paul Havers of this list. Thank you, Paul.) My grandfather could not do hard manual labor, which must have been very bad for him during the Siberian years, and probably contributed to his death at age 62 after only two months in the USA. Back to the events of 1939--my grandfather was responsible for overseeing the church building project, but he was not a politician.
My dziadek was threatened with arrest, imprisonment, or death if he didn't give up his arms. Even after he turned in the arms, which was documented, searches were done several times, I think always in the middle of the night. Because of this, my grandfather was forced into hiding for two months in the Lwow and Sasow areas until my family's time of deportation. During these night "raids," which were always unexpected, the NKVD would go through the entire house looking through everything, screaming and swearing. My aunt had to kneel down and literally beg the NKVD for my grandfather's life. My other aunt who was 8 at the time remembers kneeling also. If my grandfather was in hiding during these times, the household consisted of my grandmother, who was then 48 years old, her 5 daughters aged 20 to 8 years old, my father, who was 10 at the time, and his brother age 12. The behavior of the NKVD was always brutal. Local police would daily go into Polish homes and take possessions also.
At the time of the invasion, Jews and Soviet commissars took over all administrative positions. Poles who had previously held these positions were arrested. Poles in local political positions were released and replaced with Ukrainians and Jews. The former Polish politicians and administrators were arrested and sent to Siberia. Others were starved and interrogated. Many died under terrible circumstances and didn't see their families ever again. Others disappeared during the night hours.
"Elections" - joining the communist party was mandatory. Those who did not join would be arrested and later disappear. Attendance at election meetings was also mandatory. Ukrainians attended these willingly and Poles because they were forced to due to fear of all types of repression.
The voters received ballot voting cards which were already completed. Of course, Poles were never listed on the ballots.
New Jersey, USA