Breach Operations Lessons: Ukraine's 2023 Counteroffensive Against Russian Defensive Belts

The Ukrainian counteroffensive of summer and autumn 2023 generated some of the most extensively analyzed lessons in modern combined arms warfare. Despite receiving the largest Western equipment package of the war (including Bradley IFVs, Leopard 2 tanks, and significant M113/armored engineer vehicles), and despite months of training at NATO facilities, Ukrainian brigades attempting to breach Russia's "Surovikin Line" defensive belt suffered heavy initial equipment losses and ultimately recaptured only approximately 500–600 km² — significantly below what Western planners had anticipated and what the scale of material investment implied. Understanding why provides critical insights for future high-intensity breach operations.

The Breach Problem: Why It Is Uniquely Difficult

Breaching a well-prepared defensive belt is among the most demanding combined arms operations in military doctrine. The NATO/US Army manual for "Breaching Operations" (ATTP 3-90.4) identifies three simultaneous tasks that must be performed under fire: suppress (silence or neutralize enemy direct and indirect fire that threatens the breach point), obscure (screen the breach site with smoke), and breach (actually create and clear a lane through the obstacle — minefield, anti-tank ditch, or obstacle belt). All three tasks must occur simultaneously and in close coordination; failure of any one collapses the others.

The doctrinal requirement is that breaching be executed at night when Russian observation is least effective, with massive close air support suppressing Russian artillery and anti-tank fires during the vulnerable breach window. The absence of Ukrainian air superiority — none of the promised F-16s were operational during the critical summer 2023 window — was a central factor in the counteroffensive's challenges: the breach force could not suppress Russian fires from the air, leaving breaching engineers and following armor exposed to artillery, ATGM, and drone fires throughout the breach sequence.

Mine Clearance Failures: What Went Wrong

Ukraine received MICLIC (Mine Clearing Line Charge) systems and M58 APOBS (Anti-Personnel Obstacle Breaching System) for forming breach lanes, along with Leopard 2 AEV (Armored Engineer Vehicles) with mine roller attachments. In practice, anti-handling devices on Russian-laid mines defeated several MICLIC detonations by triggering secondary explosions that cleared only partial lanes, leaving armored vehicles to advance through incompletely cleared corridors. Russian use of non-metallic anti-tank mines also reduced the effectiveness of traditional magnetic-detection mine clearing approaches.

Most critically, when initial breach attempts generated heavy losses and the breach force halted or withdrew, Russian forces used the pause to repair obstacle belts and reinforce positions, negating the partial success of early penetration. The doctrine assumption that breach momentum would be sustained once a lane opened proved incorrect in practice: once the breach force stalled, the operational window closed.

Combined Arms Integration: The Training-Reality Gap

Ukrainian brigades trained abroad had typically trained as functional components — armor crews trained in Germany, infantry trained in UK, engineer teams trained at various facilities — but had not trained as integrated combined arms teams in assembled brigade formation before entering combat. The breach operation requires tank crews, engineers, and infantry to operate at very close ranges in precisely sequenced coordination; a formation that has never practiced this procedure together under stress will not execute it correctly in their first live attempt under fire.

After the initial costly failures, Ukraine adapted by shifting to lower-intensity but more consistent pressure tactics — small-team drone-supported infiltration, systematic artillery attrition of Russian positions, and artillery-supported small-unit advances that traded slower progress for lower equipment loss rates. By autumn 2023, this adapted approach had generated the most significant terrain gains of the counteroffensive period, including the liberation of Robotyne and progress toward the Tokmak axis, but at a pace incompatible with a strategic breakthrough within the counteroffensive's timeline.

Recommendations: Lessons for Future Breach Operations

Analysis of the 2023 experience has generated a consistent set of recommendations that informed Ukrainian planning for future operations. First, no breach operation at scale should be attempted without air suppression capability — the F-16's delivery and integration into close air support procedures for future operations reflects this lesson. Second, combined arms breach training must occur at the combined unit level with the specific units that will execute the operation, not just at the component level. Third, breach corridors must be simultaneously created at multiple points to prevent Russian reserves from concentrating against a single point of penetration.

Fourth, extensive preparatory fires — measured in weeks of degrading Russian artillery and logistics in the intended breach sector — must precede exploitation attempts. The 2023 counteroffensive arguably began major combined arms breach attempts before sufficient Russian capacity degradation had been achieved in the designated sectors. Fifth, non-metallic mine detection capability must be developed and fielded at scale before future breach attempts, as Russian non-metallic mines defeated standard metal-detection-based clearing approaches.

Frequently Asked Questions

Q: How much territory did Ukraine recapture in the 2023 counteroffensive?

A: Ukraine recaptured approximately 500–600 km² during the summer-autumn 2023 counteroffensive, including the village of Robotyne and surrounding agricultural land in Zaporizhzhia Oblast and some positions in Donetsk and Kherson oblasts — significantly less than pre-offensive Western projections had suggested.

Q: What is the core doctrine for a breach operation?

A: Breach doctrine requires three simultaneous tasks: Suppress (silence enemy fires at the breach point), Obscure (screen the action with smoke), and Breach (create and clear a lane through the obstacle). All three must occur simultaneously under fire, and close air support is the primary tool for suppression of enemy artillery during the vulnerable breach window.

Q: Why did the absence of F-16s so significantly affect the counteroffensive?

A: Close air support suppresses defender artillery and anti-tank fires during the exposed and time-critical breach window. Without it, Russian artillery could fire unimpeded on breaching engineers and following armor, generating unsustainable equipment loss rates that forced halt of the breach before lanes were fully cleared.

Q: How did Ukraine adapt after initial breach failures?

A: Ukraine shifted to small-unit drone-supported infiltration tactics and sustained artillery attrition of Russian positions, trading slower advance rates for lower equipment loss rates. This adapted approach generated terrain gains through autumn 2023 but at strategic tempo that could not achieve the breakthrough originally envisioned.

Q: What is the most important lesson for future breach operations?

A: The combination of factors that would enable future large-scale breach operations includes: operational F-16 close air support, combined arms training at the full unit level (not just component training), non-metallic mine detection capability, multi-point simultaneous breach to fix Russian reserves, and sufficient pre-breach fires to degrade Russian artillery below the threshold at which it can interdict breach operations.

Sources

• RUSI, "Stormbreak: Fighting Through Russian Defenses" (2023)
• CSIS, "Ukraine's Summer 2023 Counteroffensive: Lessons Learned" (2024)
• US Army Training and Doctrine Command (TRADOC), breach doctrine publications (ATTP 3-90.4)
• ISW, counteroffensive campaign assessments (summer–autumn 2023)
• Kofman, Michael, "The Ukrainian Counteroffensive: Observations" (War on the Rocks, 2023)
• Barnes, Julian and Cooper, Helene, New York Times reporting on counteroffensive planning (2023)
• Watling, Jack and Reynolds, Nick, RUSI reports on Ukrainian offensive capability (2023–2024)