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“Fourth house. Blue doors”: Four years ago three Ukrainians changed global warfare forever (VIDEO)

✇Euromaidan Press
By: Olena Mukhina

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On 10 June 2022, the world's first successful FPV drone combat strike was carried out by Ukrainian Armed Forces fighters from the SIGNUM battalion. The three operators with call signs "Turyst," "Shvaiger," and "Bagdad" fired the strike against a Russian target, an advisor to the Defense Minister, Serhii Sterneko, recalls. 

The footage of the strike has become a defining artifact of the Russo-Ukrainian war. Four years later, Ukraine's Unmanned Systems Forces (SBS) has struck nearly $40 billion worth of Russian targets and grown into a full branch of the Armed Forces with its own doctrine and eleven combat units.

The 10 June 2022 FPV strike is recognized as the moment that changed not only the Russo-Ukrainian war but the broader rules of armed conflict. The combat application of a commercial-grade quadcopter against a moving Russian target opened a new category of warfare that has since been replicated by militaries worldwide.

Ukraine remains the operational pioneer in this category, with the SBS now leading the Logistics Lockdown program targeting Russian rear-area logistics, deploying $113 million in mid-strike drones.

"Fourth house. Blue doors" 

The footage of the 10 June 2022 strike captures Ukrainian SIGNUM battalion fighters operating an FPV drone against a Russian target on the frontline.

The radio call "Fourth house. Blue doors." — used by the operators to identify the target — has become one of the most recognizable phrases from the early war.

The day that changed military doctrine worldwide: On 10 June 2022, Ukraine carried out the world's first FPV drone combat mission

As a result, Ukraine established Unmanned Systems Forces, helping save thousands of Ukrainian lives
📹Sternenko pic.twitter.com/kbk5KphZBG

— Euromaidan Press (@EuromaidanPress) June 11, 2026

From battlefield improvisation to separate branch of armed forces

The 10 June 2022 strike was an act of battlefield improvisation. Ukrainian forces were using commercial drone technology adapted for combat, with no formal doctrine, no procurement pipeline, and no command structure for FPV operations.

Three years later, on 11 June 2025, Ukraine formally established the Unmanned Systems Forces (SBS) as a dedicated grouping within the Armed Forces.

SBS now has eleven combat units and its own military doctrine. President Volodymyr Zelenskyy on 10 June 2026 signed a decree establishing the Day of Unmanned Systems Forces as an annual commemorative day, to be observed each 11 June.

Robert "Madiar" Brovdi: from volunteer to branch commander

The SBS commander is Major Robert Brovdi with a call sign "Madiar". Brovdi is a Hero of Ukraine, the founder of the "Madiar's Birds" unit, and one of the originators and leading practitioners of innovations in unmanned systems for combat applications.

He traveled the path from volunteer to commander of a separate branch of the Armed Forces. The trajectory is consistent with the SBS's broader institutional history, which began with battlefield improvisation in places like the 10 June 2022 SIGNUM strike, and has developed into a formal military structure with doctrine, procurement, and command.

The footage of the strike has become a defining artifact of the Russo-Ukrainian war. Four years later, Ukraine's Unmanned Systems Forces (SBS) has struck nearly $40 billion worth of Russian targets and grown into a full branch of the Armed Forces with its own doctrine and eleven combat units.
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Ukraine created drone army one year ago. It already destroyed $40 billion worth in Russian targets

✇Euromaidan Press
By: Olena Mukhina

Semikolodezyanska oil depot in Yedi-Quyu (Lenine), occupied Crimea, amid a Ukrainian drone attack. Screenshot from video: Ukraine's Special Operations Forces

Ukraine's Unmanned Systems Forces (SBS) have struck Russian targets worth nearly $40 billion in the year since the branch's creation, Volodymyr Zelenskyy said. On 10 June, the Ukrainian president signed a decree establishing the Day of Unmanned Systems Forces (SBS Day).

The $40 billion cumulative damage figure Zelenskyy cited represents a 57% increase over the $25.5 billion in cumulative Russian losses that Commander-in-Chief Oleksandr Syrskyi reported in April 2026.

The SBS Day decree institutionalizes the unmanned forces as a permanent feature of Ukraine's military doctrine, alongside the army, navy, and air force.

What Zelenskyy said about SBS's achievements

"Only a year since the creation of the SBS group, Russian targets at various levels worth nearly $40 billion have already been hit," Zelenskyy said in his evening address.

He added that SBS is really a model for many other armies, and "these months we are especially grateful for middlestrikes."

"Russian military logistics across the entire depth of the temporarily occupied territory is now accessible to Ukrainian drones. The Russian border zone also experiences our impact," he stated.

The president added that Russia already feels the effect of these strikes, and Ukraine will continue to scale them.

"The most important thing is that these are different types of strikes, and each one adds to our ability to save lives," the Ukrainian president added.

What does middlestrike mean operationally? 

The middlestrike concept Zelenskyy invoked refers to Ukrainian drone strikes against Russian military logistics in the depth of occupied territory and across the Russian border zone. The depth zone covers Donetsk, Luhansk, Crimea, and parts of Zaporizhzhia and Kherson Oblasts. The Russian border zone reaches Belgorod and Kursk. Middlestrikes sit between the very-long-range deep strikes against strategic Russian infrastructure, such as the Volgograd refineries, and the tactical frontline FPV operations. The SBS is led by Brigadier General Robert Brovdi, call sign "Madiar".

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