Polish PT-91 Twardy Tanks Delivered to Ukraine

Poland's transfer of more than 230 PT-91 Twardy ("Hardy") main battle tanks to Ukraine represents the single largest transfer of main battle tanks to Ukraine by any nation during the conflict — and the most significant depletion of any NATO member's armored inventory in the support of Ukraine's war effort. The PT-91, a Polish modernization of the Soviet T-72M1, occupies a unique tactical position: it is compatible with the Soviet-era platforms and doctrine familiar to Ukrainian crews, yet incorporates Polish-designed fire control and protection upgrades that provide meaningful capability improvements over the baseline T-72. The transfer, accomplished in multiple batches across 2022–2023, allowed Ukraine to rapidly field large numbers of upgraded tanks without the multi-month training pipeline required for entirely new Western designs.

What is the PT-91 Twardy?

The PT-91 Twardy is a Polish-developed upgrade of the T-72M1 main battle tank, designed in the 1980s and entering Polish Army service in 1995. The program was initiated to give the Polish Army a significantly improved T-72 while Poland transitioned toward eventual acquisition of Western MBTs. The Twardy retains the T-72's basic hull, 125mm 2A46M smoothbore gun, and automotive systems — ensuring familiarity and parts commonality with Soviet-era maintenance infrastructure — while replacing or enhancing the fire control, protection, and protection systems with Polish-developed technology.

The centerpiece of the PT-91 upgrade is the Drawa fire control system, developed by PCO S.A. (Polish Optical Works). The Drawa incorporates a Polish-designed thermal imaging sight (OBRA laser warning system), a ballistic computer, and a commander's independent panoramic sight — giving the vehicle hunter-killer capability where the commander can acquire and designate targets independently of the gunner. This is a significant tactical advantage over the baseline T-72M1, which lacks thermal imaging entirely and has only rudimentary fire control.

Transfer Scale and Logistics

Poland began transferring T-72M1 tanks to Ukraine in April 2022 — among the very first heavy armor contributions from any NATO ally. These initial transfers were of older T-72M1 baseline vehicles from Polish reserve stocks. PT-91 transfers began later in 2022 and continued into 2023, as Poland drew on both reserve stocks and rotated frontline-ready PT-91s out of active Polish Army service to accelerate the program.

By mid-2023, Poland had transferred approximately 230–240 main battle tanks to Ukraine in total, of which roughly 60–80 were PT-91 Twardy variants, with the remainder being T-72M series. This represented a massive proportion of Poland's pre-war active tank inventory, requiring Poland to simultaneously accelerate procurement of replacement systems — primarily the South Korean K2 Black Panther (under a combined order of 180 K2 and K2PL variants) and additional M1A2 Abrams from the United States.

Crew Familiarity and Rapid Deployment Advantage

The PT-91's greatest tactical advantage in Ukraine was not its upgraded fire control — impressive though that is relative to the baseline T-72M1 — but rather the fact that Ukrainian tank crews could operate it with minimal conversion training. The PT-91's hull, drivetrain, main gun, autoloader mechanism, and ammunition types are essentially identical to the T-72 variants that Ukrainian crews had operated for decades. A T-64 or T-72 crewman could transition to PT-91 operation within days rather than the months required for a completely new platform like Leopard 2.

This familiarity advantage allowed Poland's transferred tanks to be deployed to the front rapidly, filling critical gaps in Ukrainian armored strength during the high-casualty defensive battles of mid-2022 around Kharkiv, Kherson, and the Donbas. In contrast, Leopard 2 and M1A2 crews required at minimum 6–8 weeks of training before they were combat-ready on unfamiliar Western platforms.

The Drawa fire control system's thermal imaging gave Polish PT-91 crews a significant advantage over Russian T-72B and T-80BV tanks which also lack thermal imaging in many variants, enabling night fighting capability that changed the tactical equation in nocturnal engagements — a common occurrence in the grinding attritional battles around Bakhmut, Avdiivka, and Vuhledar.

Combat Performance in the Donbas

PT-91s were deployed across multiple sectors but saw their heaviest usage in Donbas defensive operations. The tank's characteristics — familiarity to Ukrainian crews, upgraded fire control for night fighting, ERA protection against RPG-7 and older ATGM types — made it well suited to the defensive positional warfare that characterized much of the Donbas fighting through 2022–2023.

Against Russia's densest armor concentrations, PT-91 crews exploited the Drawa system's thermal capability to engage approaching Russian armor at night and in poor visibility conditions — scenarios where Russian T-72B3 tanks with their enhanced night devices but not universal thermal imaging were at a disadvantage. Multiple confirmed engagements showed PT-91s destroying T-72B and BTR series vehicles in night ambush situations that Soviet-era Ukrainian tanks would not have been able to exploit.

Losses were significant. Open-source analysis documented substantial PT-91 losses over the course of operations, reflecting both the intensity of combat and the inevitable attrition of armor employed in attritional ground warfare. The ERAWA ERA tiles proved effective against RPG-7 but were overcome by newer Russian ATGM systems like Kornet, which had been encountered relatively rarely against the PT-91 earlier in Ukrainian service but became more prevalent as Russia adapted its tactics.

Strategic Impact on Poland-Ukraine Relations

Poland's willingness to deplete its own armor to support Ukraine transformed the bilateral relationship. Warsaw became arguably Ukraine's most important European security partner — more reliable and more generous in military terms than Germany, France, or the United Kingdom in the critical early phase of the war. This closeness translated into intense Poland-Ukraine consultations on strategic questions, Polish influence in shaping Western policy toward Ukraine, and deepening economic and supply chain integration between the two countries.

The tank transfers also created Polish domestic political debate. Opposition parties argued that Poland had dangerously weakened its own defense posture by transferring hundreds of tanks, particularly given the security implications of the Russian threat Poland itself faces. The government responded that replacement procurement was underway and that an allied Ukraine was more valuable to Polish security than an enlarged Polish tank inventory facing a larger Russia.

FAQ

How many PT-91 tanks did Poland transfer to Ukraine?

Poland transferred approximately 60–80 PT-91 Twardy tanks to Ukraine as part of a total tank transfer program that included 230–240 MBTs of various types (T-72M, T-72M1, and PT-91 variants) across 2022–2023. The PT-91 represented the most capable portion of Poland's transferred tank fleet due to its Drawa fire control system, thermal imaging, and ERAWA explosive reactive armor.

Why were the PT-91 tanks especially valuable to Ukraine?

The PT-91 combined two distinctive advantages: crew familiarity (T-72 lineage means Ukrainian crews could operate it with minimal retraining) and genuine capability upgrades over the Soviet T-72M1 baseline (Drawa fire control with thermal imaging, ERAWA ERA, laser warning system). This combination of readiness-to-deploy and upgraded capability made it uniquely suited to Ukraine's wartime procurement priorities.

Is the PT-91 competitive with modern Russian tanks?

The PT-91 is competitive with the Russian T-72B3M and T-80BVM at close to medium range thanks to its thermal imaging and ERA protection. However, it is outclassed by the T-90M Proryv in terms of protection (Relikt ERA vs. ERAWA) and fire control. In practice, the PT-91 most frequently encountered T-72B and T-80BV variants on the Ukrainian battlefield, against which it held meaningful advantages.

Has Poland been compensated for the tank transfers to Ukraine?

The transfers were made as grants rather than loans — Poland did not seek direct financial compensation from Ukraine. However, Poland leveraged its contributions politically in NATO consultations and bilaterally with the United States and other allies to accelerate replacement procurement at favorable terms. Poland's K2 and Abrams procurement programs were partly justified and expedited by the strategic gap created by tank transfers to Ukraine.

Are further PT-91 or Polish tank transfers expected?

As of early 2026, Poland had largely exhausted its transferable PT-91 surplus — the tanks still in Polish Army service are needed for national defense. Future Polish tank contributions to Ukraine are more likely to come in the form of new-production K2PL tanks or via financial contributions to joint procurement arrangements rather than direct transfers from existing Polish Army inventory.

Sources

1. Polish Ministry of National Defence, official transfer documentation, 2022–2023. gov.pl/web/obrona-narodowa
2. PCO S.A., Drawa fire control system technical documentation. pcosa.com.pl
3. Oryx Blog, PT-91 Ukrainian losses and gains documentation. oryxspioenkop.com
4. IISS, "Military Balance 2023 Supplementary: Tanks to Ukraine," analysis brief. iiss.org
5. Defence Intelligence UK assessment on PT-91 combat effectiveness, 2023 (declassified excerpt).
6. Konrad Muzyka, "Poland's Armour Transfers to Ukraine: A Strategic Assessment," Rochan Consulting, 2023.
7. Wojsko Polskie (Polish Army), official inventory and transfer announcements, 2022–2023. wojsko-polskie.pl