According to a Fedorenko's report on operations of tank forces of the Ukrainian Front "14 and 49 Tank Brigades remained at their former quarters at Zhitomir". So formally they were assigned to the Ukrainian Front, but didn't cross the border. Neither they appear in the list of losses of trophies from the same report. 49 Tank Brigade was formed with the start of mobilization from the 5 Light Tank Regiment.Piotr Kapuscinski wrote: ↑19 Oct 2013, 11:58B) Tank Brigades (19 - 22; one ruled out):
1) Took part in 1st echelon - 2, 4, 5, 6, 10, 21, 22, 23, 24, 25, 26, 27, 36, 38
2) Took part in 2nd echelon - 7, 14, 29, 32
3) Took part in 3rd echelon - 49
4) Took part according to some sources - 16, 18, 20, 39
The greatest misery is the 7 Tank Brigade which included in the official list participating in the campaign. Where did it came from I don't understand. It was only formed in June 1940 as far as I'm aware.