Starshiy leytenant Nikolay Shepetov served in the 4./38 IAP during the Winter War. This unit was equipped with Polikarpov I-153s.

On 17 February 1940, kapitan Kashtanov and starshiy leytenant Shepetov of 4./38 IAP claimed two Fokkers at Turku.
These claims can’t be verified with Finnish records.

On 2 March, two I-153s flown by starshiy leytenants Lazarev and Shepetov (4th eskadrilya) claimed two Fokker D.XXIs in the Tampere area.
These claims can’t be verified with Finnish losses.

The LaGG-3s from 38 IAP fought with Bf 109s in the Parfino area on 22 February 1942 and Nikolay Sobolev claimed one west of Parfino station as a shared together with three other pilots while Shepetov claimed one over Parfino as a shared with another pilot.

Shepetov ended the war with 2 biplane victories.
These had been claimed during 119 combat missions.
During his career, he was decorated with the Order of the Red Banner and the Order of the Red Star (twice).

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1940
1	17/02/40		1	Fokker (a)	Destroyed	I-153		Turku area	4./38 IAP
2	02/03/40		1	Fokker D.XXI (b)	Destroyed	I-153		Tampere	4./38 IAP
	1942
	22/02/42		1/2	Bf 109	Shared destroyed	LaGG-3		Parfino	38 IAP

Biplane victories: 2 destroyed.
TOTAL: 2 and 1 shared destroyed.
(a) Not verified with Finnish records.
(b) Not verified with Finnish records.

Sources:
All aces of Stalin 1936-1953 – Mikhail Bykov, 2014
Soviet Aces 1936-1953
Soviet Fighter Pilots 1936-1953 - Mikhail Bykov
Red Stars 7 - Talvisota Ilmassa - The Winter War In the Air - Carl-Fredrik Geust, 2011 Apali Oy, Tampere, ISBN 978-952-5877-04-5
Additional information kindly provided by Ondrej Repka.