Update from August 15, 2026. The initial version of this article was too focused on how Russian forces entered Dnipropetrovsk Oblast and almost failed to answer the main question: why Moscow could not hold what it had achieved and who commanded Russian forces during the subsequent retreat. The material has been revised around this chain of responsibility.

In the summer of 2025, Russian propaganda presented the advance to the administrative border of Dnipropetrovsk Oblast as the beginning of a new phase of the offensive. Units of the 'Tsentr' and 'Vostok' force groupings entered the region, occupied several villages, and stretched out a salient at the junction of three oblasts. However, the success did not turn into a stable bridgehead. In 2026, Ukrainian forces seized the initiative in several sectors, forced Russian armies to go on the defensive, and reclaimed a significant portion of the lost territory.

This outcome has a specific Russian chain of command. The 'Vostok' force grouping was commanded by Andrey Ivanaev during the main phase of the advance and counterattack. Under him operated the 29th and 36th Combined Arms Armies, linked to Oleg Senkov and Grigory Tyurin. To the north, the 90th Tank Division of the 41st Army of the 'Tsentr' force grouping advanced — under the command level of Valery Solodchuk and Sergey Ryzhkov. Below, we separate confirmed positions from assumptions about specific orders.

First, the Result: The Bridgehead Was Not Held

The phrase 'Russia lost Dnipropetrovsk Oblast' requires one important clarification. Russia never occupied the entire region and did not approach control over it. It seized a limited strip in the east of the oblast and in adjacent areas of Donetsk and Zaporizhzhia Oblasts. Therefore, the precise conclusion is: the Russian command lost a significant portion of the captured bridgehead and failed to realize the stated opportunity to develop the offensive deeper into the region.

On April 5, 2026, the Ukrainian command announced the recapture of approximately 480 km² and 12 settlements, eight of which were located in Dnipropetrovsk Oblast. On August 12, Volodymyr Zelenskyy reported 745 km² and 26 settlements as part of an operation in the broader Oleksandrivske direction, covering the junction of Dnipropetrovsk, Donetsk, and Zaporizhzhia Oblasts. Reuters separately noted a discrepancy between official counts and independent mapping.

Even a more conservative independent assessment does not change the military significance. Russia spent months, personnel, and equipment to create a salient but failed to turn it into a stable line, protect its overstretched flanks, and maintain momentum. Troops that acted offensively in 2025 were forced to repel counterattacks and redeploy reserves to stabilize the situation in 2026.

How Russian Forces Entered the Oblast

On June 8, 2025, the Russian Ministry of Defense announced that units of the 90th Guards Tank Division of the 'Tsentr' force grouping had reached the border and began operating in Dnipropetrovsk Oblast. A few days later, the ministry added the 55th Motorized Rifle Brigade. Simultaneously, the 'Vostok' force grouping advanced along a broad front towards the border.

Russian units exploited real weaknesses in Ukrainian defenses: a shortage of infantry, gaps between strongpoints, coordination problems among attached formations, and drone strikes on logistics. Small assault groups moved between positions, accumulated in tree lines and villages, and then widened the breach. In autumn, mechanized units took advantage of fog and failures at brigade junctions.

This was a tactical success. The error in the Russian public narrative was that entering a few villages was presented as the beginning of an inevitable advance across the oblast. Developing the breakthrough required fresh reserves, protected logistics, expanding the base of the salient, and the ability to hold a long front line simultaneously. It was at this level that the Russian failure began.

Andrey Ivanaev: The Main Commander of the Failed Campaign

Andrey Ivanaev took command of the 'Vostok' force grouping in November 2024. The Russian Ministry of Defense publicly confirmed his position in December 2024 and again in May 2026, when Defense Minister Andrey Belousov inspected the grouping's command post. Consequently, Ivanaev commanded 'Vostok' both during the entry of its units into Dnipropetrovsk Oblast and during the main phase of Ukrainian counterattacks.

The armies under his command simultaneously tackled resource-incompatible tasks: they continued to press towards Huliaipole and Orikhiv, held the overstretched lines in the Oleksandrivske direction, and attempted to close off sectors where Ukrainian units were penetrating their defenses. Analytical reviews noted that the Russian command had to redeploy additional units and operational reserves to support the 29th and 36th Armies.

On August 5, 2026, Vladimir Putin transferred Ivanaev to command the 'Tsentr' force grouping. 'Vostok' was taken over by his chief of staff, Pyotr Bolgarev. This was not publicly termed a dismissal for defeat, so asserting a disciplinary penalty is not possible. However, the chronology is telling: the change of command occurred after months of losing the initiative and just a week before Kyiv's announcement of 745 km² recaptured.

29th Army: Oleg Senkov and the Overstretched Front

The 29th Guards Combined Arms Army operated in the central part of the Russian formation in the Oleksandrivske direction. In August 2025, a state institution of the Zabaykalsky Krai publicly named Major General Oleg Senkov as its commander. We have not found a more recent official report on a change of army commander in open sources, so the correct phrasing is — Senkov is the last reliably confirmed commander of the 29th Army for the period under review.

It was the 29th Army's sector that repeatedly featured in reports of Russian attempts to stabilize the front and repel Ukrainian counterattacks. Subordinate formations occupied positions on both sides of important road axes, and the 2025 advance increased the length of their area of responsibility. The further west the army advanced, the more forces were required not for new assaults, but for guarding flanks, roads, and scattered settlements.

Senkov's command responsibility stems from his position and the army's situation, but it should not be turned into a fictional order. There are no operational directives, report transcripts, or official investigations in open sources that would show what specific decision he made regarding each lost village. The level of responsibility has been established; specific culpability for individual episodes remains undisclosed.

36th Army: Grigory Tyurin and the Counterattack Sector

The open identification database of the Main Directorate of Intelligence (GUR) names Grigory Tyurin as the commander of the 36th Guards Combined Arms Army. We have not found a more recent public order confirming his position specifically for August 2026 in open sources. The army includes, among others, the 37th Motorized Rifle and 5th Tank Brigades. These formations operated in the southern and central sectors of the Russian salient and later found themselves in the path of Ukrainian counterattacks.

In spring and summer 2026, analysts described the actions of the 36th Army primarily in defensive terms: preventing further Ukrainian advances, restoring previous positions, holding supply routes, and covering the junction with the 29th Army. The Russian command had to reinforce this sector with elements of other formations, including naval infantry and units of the 68th Army Corps.

Tyurin is the second army commander whose name should appear in an article about the Russian failure. Not because a document about his punishment has been published, but because his formation held a sector where Russia's offensive gains turned into a defensive problem. The absence of a public dismissal does not negate the army commander's responsibility for the state of his subordinate sector.

'Tsentr': Valery Solodchuk and Sergey Ryzhkov

The northern part of the story relates to the 'Tsentr' force grouping. Since May 2025, it has been commanded by Valery Solodchuk. The grouping included Sergey Ryzhkov's 41st Combined Arms Army, and under its command was the 90th Tank Division, which the Russian Ministry of Defense was the first to name as having entered Dnipropetrovsk Oblast.

In 2026, the 90th Division continued to operate west of Novopavlivka, while the neighboring 29th and 36th Armies of 'Vostok' attempted to stabilize their sectors. This means that responsibility cannot be attributed solely to Ivanaev: the Russian salient crossed the boundary between the zones of two force groupings, and the coordination of their flanks was above the level of a single army.

On August 5, Ivanaev replaced Solodchuk at the head of 'Tsentr'. Public reports did not explain whether Solodchuk's relocation was related to front-line results. More important for this article is the established period: Solodchuk commanded 'Tsentr', and Ryzhkov the 41st Army, during the 90th Division's entry into the oblast and the subsequent struggle to hold the northern sector.

Why Ramil Ibatullin Cannot Be Listed as Commander

In older directories, Ramil Ibatullin is often listed as the commander of the 90th Tank Division. For the 2025–2026 campaign, this attribution is outdated. Ibatullin commanded the division from July 2021, but by summer 2022, he had moved to the position of Deputy Commander of the 41st Army, and later headed the 2nd Combined Arms Army.

The name of the current commander of the 90th Division could not be reliably established from open sources. Therefore, the article names the confirmed chain of command above the division — Sergey Ryzhkov and Valery Solodchuk — but does not substitute a known name from an outdated record. This is an example of why a list of commanders cannot be compiled by simply copying from encyclopedias.

What Broke the Russian Plan

The first factor was an overstretched front. Russian armies advanced through sparse defenses but gained long flanks and numerous small settlements that required garrisons and consistent resupply. What helped advance with small groups proved insufficient for dense defense against organized counterattacks.

The second factor was a delayed reaction. Military analysts reported that the reinforcement of the 29th and 36th Armies' sectors with operational reserves began only after Ukrainian units had achieved a series of penetrations. Even if the specific timing remains an analyst's estimate, the subsequent redeployment of the 68th Corps and naval infantry confirms that regular forces in the sector were insufficient.

The third factor was competing priorities. 'Vostok' continued pressure in the Huliaipole direction while simultaneously trying to halt counterattacks to the north. Maintaining offensive momentum in one sector limited the ability to quickly reinforce another. This is not proof of a single erroneous order, but an observed consequence of force distribution.

The fourth factor was logistics. Ukrainian strikes on rear roads, command posts, and transport increased the cost of supplying forward units. The narrower the base of the salient and the further the front line, the more it depends on a few routes. The Russian command faced a mirrored problem of the one it itself created for Ukrainian defenses in 2025.

Ukrainian Mistakes Were a Condition, Not an Excuse

The Russian failure of 2026 does not negate the Ukrainian failure of 2025. The General Staff of Ukraine officially linked the dismissal of Maksym Kytuhin from the position of commander of the 20th Army Corps to shortcomings in command, personnel losses, and territory. Military testimonies pointed to empty or insufficiently manned positions, weak junctions, and a shortage of infantry.

However, the defending side's mistake explains how the enemy gained an opportunity, not why it failed to capitalize on it. After entering the oblast, responsibility for developing the operation lay with the Russian chain of command: the General Staff of the Russian Federation, force grouping commanders, armies, and formations. Attributing the subsequent retreat solely to Ukrainian reinforcement would remove the decisions of Russian staffs from the analysis.

Why the 2025 Breakthrough Was Possible at All

In May 2025, the General Staff of Ukraine acknowledged command errors within the 59th Brigade and unreliable reports on the status of units under Bohdan Shevchuk. Later, journalists described positions that existed on paper but were not adequately manned with infantry. The corps system was being introduced during the fighting, and the new staff managed a large number of attached units.

Russian commanders effectively utilized this period: they infiltrated between strongpoints, struck supply lines with drones, consolidated small groups, and increased pressure. This is why the beginning of the campaign was a real Russian success, not just a propaganda episode. The outcome is all the more striking: the gained advantage proved temporary.

Fortifications and 14 Million: A Separate Story

The dispute over fortifications remains part of the explanation for Ukrainian losses. The Financial Times reported delays and fragmented responsibility, while the oblast administration and a parliamentary commission stated that tasks were completed and quality structures were present in inspected areas. These assessments could pertain to different defense lines and construction phases.

In March 2026, the Ukrainian Prosecutor's Office reported five suspects and two schemes in the procurement of materials for fortifications of one military unit, with a total declared damage of over 14 million hryvnias. The names of the individuals involved and the unit number were not publicly disclosed; there was no verdict in the case.

The investigation did not establish a public link between the disputed procurements and specific locations of the Russian breakthrough. Moreover, this case does not explain why the armies of Ivanaev, Senkov, and Tyurin later lost the occupied territory. The corruption risk on the Ukrainian side and the operational failure of the Russian command are two different lines of responsibility.

The Limits of What Is Proven

It has been proven who commanded the key Russian force groupings and armies, and which formations operated in the direction. The replacement of Ivanaev by Bolgarev on August 5, 2026, has been confirmed. Ukrainian statements about the large-scale recapture of territory and independent cartographic dynamics favoring Ukraine have been confirmed.

It has not been proven that Ivanaev or other Russian generals were officially dismissed specifically for the loss of the bridgehead. No orders have been published that would link a specific army commander to the abandonment of each settlement. The name of the commander of the 90th Tank Division in 2025–2026 has not been reliably established. These gaps cannot be filled with conjecture.

Who Is Responsible for the Russian Failure

Andrey Ivanaev is the main commander of the period of failure: his 'Vostok' achieved offensive results, overstretched the sectors of the 29th and 36th Armies, and failed to hold a significant portion of the salient. Oleg Senkov and Grigory Tyurin are army-level commanders whose formations directly repelled Ukrainian counterattacks. Valery Solodchuk and Sergey Ryzhkov were responsible for the northern sector, where the 90th Tank Division of 'Tsentr' operated.

Pyotr Bolgarev took command of 'Vostok' only on August 5, 2026, so it would be incorrect to hold him responsible for the entire preceding campaign. However, as the former chief of staff of the grouping, he was not an external observer: he was part of the command system, and after his appointment, he was tasked with dealing with its consequences. Ivanaev, instead of being dismissed, received 'Tsentr', which demonstrates the personnel logic of the Russian command: failure in one direction does not necessarily halt a career.

The outcome of the campaign is not that Russia once managed to cross the administrative border. The outcome is that several combined arms armies failed to turn this success into a sustainable operational advantage. The captured bridgehead became an overstretched and costly-to-supply sector, the Ukrainian command assembled a strike grouping, and Russian generals were late in transitioning from offense to stable defense. This is why the history of Dnipropetrovsk Oblast is now not only a story of a Ukrainian front breakthrough but also a dossier on Russian command failure.