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 Bf109s.

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	Bf109	Destroyed	I-153			84-A IAP
2	??/??/42		1	Bf109	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.