On 27 September 1939, the corps was relocated to the Pskov area on the Estonian border, to back up threats of force against that country.

[1] On 13 October the corps was transferred back to the Leningrad Military District from the 8th Army and returned to Luga.

By 30 November, in preparation for the Winter War, the Soviet attack on Finland, the 10th was relocated to the Finnish border as part of the 7th Army.

On 30 November, the corps crossed the border at the beginning of the invasion, with its headquarters in the Korkiamyaki area, then at Rautu and Liipua.

The corps headquarters was moved to Kingisepp to be used to form an army group under the command of Dmitry Pavlov.