https://ohota-aliance.ru/vooruzhenie/bo ... ketka.htmlThe T-27 participated in battles in Central Asia against the Basmachi,
https://en.wikipedia.org/wiki/Basmachi_movement
and about a hundred vehicles took part in the Soviet-Finnish war.
.In May 1941, the T-27 was completely decommissioned, although several cars still remained in the army – they often trained driver mechanics or used them for auxiliary purposes. Part of the tankettes participated in the battles of the Great Patriotic War. The last time they are mentioned in the reports on the battles near Moscow and in the Crimea.
https://arsenal-info.ru/b/book/1335279114/8