The Continuation War (Finnish: jatkosota, Swedish: fortsättningskriget, 25 June 1941 – 19 September 1944) was the second of two wars fought between Finland and the Soviet Union during World War II.

Although the weapon was not able to penetrate newer Soviet tanks like the T-34 and KV-1, it still proved to be quite effective against bunker loopholes/embrasures, long range targets, and even aircraft.
A fully automatic version of the L39 was made in small numbers that served as an anti-aircraft gun.
Other good targets were snipers, and several weak spots on tanks, such as open top hatches, especially with phosphorus ammunition.
It was even able to damage tank turrets and pin them to stop traversal of the cannon.

Around December 1940, a Lahti L-39 replaced the original 13.2 mm L-35/36 machine gun on the single Finnish L-182 armored car.
This conversion was employed by the armored unit of 1.
Divisioona (English: 1st Division) during 1941.
The Continuation War (Finnish: jatkosota, Swedish: fortsättningskriget, 25 June 1941 – 19 September 1944) was the second of two wars fought between Finland and the Soviet Union during World War II.
Although the weapon was not able to penetrate newer Soviet tanks like the T-34 and KV-1, it still proved to be quite effective against bunker loopholes/embrasures, long range targets, and even aircraft. A fully automatic version of the L39 was made in small numbers that served as an anti-aircraft gun. Other good targets were snipers, and several weak spots on tanks, such as open top hatches, especially with phosphorus ammunition. It was even able to damage tank turrets and pin them to stop traversal of the cannon.
Around December 1940, a Lahti L-39 replaced the original 13.2 mm L-35/36 machine gun on the single Finnish L-182 armored car. This conversion was employed by the armored unit of 1. Divisioona (English: 1st Division) during 1941.
Lahti L-39