Aleksandr Alekseyev was born on 28 May 1906 in Babinka in the Voronezh region.

In 1926, he joined the Red Army.

In June 1942, major Aleksandr Alekseyev served in 71 IAP-KBF, which still was partially equipped with Polikarpov I-153s

During the night of 5 June, pilots from the 71 IAP-KBF made seven sorties against a reported 35 He 111s and Ju 88s that were attacking the southern forts of Kronstadt.
Five He 111s were claimed by the Soviet pilots when Ivan Serbin claimed one shared bomber with kapitan Petr Biskup and a second with major Alekseyev. Starshiy leitenant Aleksandr Baturin and kapitan Ivan Gorbachev claimed one He 111 each. The fifth was claimed by kapitan Biskup.

Between 00:40-02:45 on 6 June, five I-153s and two I-16s from 71 IAP-KBF tried to repel enemy bombers in the Kotlin area. Major Alekseyev tried to intercept one, but it skilfully used the cloud cover and at 01:15, Alekseyev decided to break above the upper deck of clouds. At an altitude of 3500m visibility was good and after making a turn, he noticed a Ju 88 heading east. Alekseyev attacked from behind and the bomber crashed in the Kotlin area.

Between 00:40-02:30 on 8 June, three I-153s and three I-16s from 71 IAP-KBF intercepted enemy bombers attacking torpedo boats near the northern forts of Kronstadt. Kapitan Petr Biskup and kapitan Konstantin Solov'yev attacked and claimed a shared destroyed Ju 88. The ground forces confirmed this claim.
During the same raid, major Alekseyev claimed a Ju 88, which crashed into forest on Björkö island.

Alekseyev ended the war with 1 shared biplane victory and a total of 2.

He continued to serve after the end of the Second World War.
During his career, he was decorated with the Order of the Red Banner three times and the Order of the Red Star twice.

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1942
	05/06/42	night	1/2	He 111	Shared destroyed	I-153		Kronstadt area	71 IAP-KBF
1	06/06/42	01:15-02:45	1	Ju 88	Destroyed	Polikarpov		Kotlin area	71 IAP-KBF
2	08/06/42	00:40-02:30	1	Ju 88	Destroyed	Polikarpov		Björkö	71 IAP-KBF

Biplane victories: 1 shared destroyed.
TOTAL: 2 and 1 shared destroyed.

Sources:
Airmen of World