Zcherdev served with the 84-A IAP. This unit was formed on 6 August 1942 with 16 I-153s and flew in North Caucasus. The unit was mainly used for ground attack missions. During 4 ½ month they shot and strafed 122 German aircraft on the ground, destroyed 319 tanks, 1087 trucks, 24 guns, 222 Flaks and machine-gun Flaks. The most experienced pilots from this unit later served in the 16 GIAP.

During his time with this unit, he claimed two Bf 109s.

Zcherdev ended the war with 2 victories, both of them claimed while flying the Polikarpov I-153.

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1942
1	??/??/42		1	Bf 109	Destroyed	I-153			84-A IAP
2	??/??/42		1	Bf 109	Destroyed	I-153			84-A IAP

Biplane victories: 2 destroyed.
TOTAL: 2 destroyed.

Sources:
Eskadrilia vediot boi - K. Suhov, 1983 kindly provided by Alexey V. Andreev.