We’ve examined a number of artillery systems in use in Ukraine, including the venerable M101 howitzers and the MT-100s mounted on MT-LBs, one of the smallest and most interesting howitzers in use is the OTO Melara Mod 56.
The Mod 56 is a small 105mm pack howitzer. It weighs in at 1.29 metric tons and it can be towed by light vehicles. It has a split trail gun carriage and a hydro-pneumatic recuperator assembly. Developed by Italy’s OTO Melara the gun entered service in the mid-1950s and has seen service with countries around the world including Italy, the UK, Australia, Spain, Pakistan and the Philippines.
Much like the heavier M101 howitzers, transferred to Ukraine by Lithuania, the Mod 56 can use any M1 105mm ammunition. With its short 1.47 metre-long barrel, the Mod 56 has a maximum effective range of around 10,000 metres (10km/6 miles). While this puts it at a severe disadvantage compared to the larger 155mm howitzers used by Ukraine and the 152mm guns used by Russia the small Mod 56 has the advantage of being lightweight and can be deployed forward under cover. The most useful role it could likely fulfil is as an infantry support gun.
In November 2022, Spain’s Defence Minister Margarita Robles confirmed that Spain would send a battery of six light howitzers and also provide training for Ukrainian gun crews. Subsequently, a brief clip of Ukrainian gunners training on the Mod 56 was shared in late November.
The guns were seen in Ukraine for the first time in early January, with a short clip of one of the guns firing being shared on 11 January. It appears the gunner is wearing a National Guard patch but its unclear which unit the gun belongs to. On 12 January, the 1st Mechanized Battalion of Ukraine’s 3rd Assault Brigade posted an info-graphic giving some basic detail on the Mod 56.
On 20 February, a brief clip of a Mod 56 was shared, the footage was believed to have been taken in the vicinity of Bakhmut. However, photographs taken by an AP photographer, Libkos, of the same gun showed that the gun was actually in action in Avdiivka, Donetsk. The series of photographs also showed that the gun was being operated by a National Guard unit and the crew was using drone footage to select their targets. One photograph was also shared by President Zelensky on 5 March. Interestingly, the gun is seen without its shield.
Another video of one of the guns in action was shared on 16 April. It was several months before more imagery of the Mod 56s in use appeared but on 1 June, the Ukrainian National Guard shared a photograph of one of the guns and several days later, on 3 June, a short video of a gun in action was shared.
Most recently on 19 July, a Ukrainian National Guard unit shared a brief clip of a Mod 56 firing. It also nicely illustrates the gun’s breech mechanism.
From the available imagery, it appears that the guns are operated by Ukraine’s National Guard, though which artillery unit is unclear. While it has been confirmed that Spain has provided at least 6 Mod 56 howitzers, it remains unknown if any other countries, such as Italy, have provided the small guns.
Update – 29/12/23:
An undated sighting of a Mod 56 in operation in Ukraine. Notably half of the gun shield appears to be missing.
Update – 17/04/24: A clip posted on 7 April, date of recording unconfirmed, showing a Mod 56 in action. The howitzer’s gunshield has been removed.
Update – 29/5/24:
Update – 23/07/24:
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The Armourers Bench 