Within 49 Drone Test
Why One Pulse Changed the Counter Swarm Debate
The 49-drone engagement matters because it tested whether microwave defence can affect a whole swarm instead of chasing targets one by one.
On this page
- What one to many defeat means
- Why swarms stress traditional defences
- What the Camp Atterbury result actually showed
Page outline Jump by section
Introduction
The most important aspect of the Leonidas demonstration was not the number 49 by itself. It was the fact that dozens of drones were reportedly defeated with a single microwave engagement rather than through dozens of separate intercepts. In the counter-drone world, that distinction addresses one of the hardest problems facing modern air defence: how to stop large numbers of inexpensive drones arriving at the same time. During the Camp Atterbury demonstration, Epirus reported that its Leonidas high-power microwave system neutralised a 49-drone swarm with one pulse of electromagnetic interference after successfully engaging 61 drones across multiple scenarios. [Epirus]epirusinc.comTap to unmute.Read moreEpirusEpirus' Leonidas High-Power Microwave Defeats 49-Drone…10 Sept 2025 — Leonidas neutralized 61-of-61 drones, culminating in a 49…
The event drew attention because it tested a fundamentally different defensive model. Instead of tracking and defeating each drone individually, the system attempted to affect many targets simultaneously. Whether that approach proves consistently effective in operational conditions remains a separate question, but the demonstration directly addressed the central challenge that drone swarms create: capacity. [The War Zone]twz.comarmy puts 50m bet on next gen leonidas high power microwave counter drone techThe War ZoneArmy Puts $43M Bet On Next Gen Leonidas High Power…17 Jul 2025 — Epirus describes IFPC-HPM as an effective, cost-efficient…
What One-to-Many Defeat Means
Traditional air-defence systems are generally designed around a one-to-one logic. A missile engages one target. A gun fires at one target area. Even many electronic-warfare systems focus on individual links or specific aircraft.
A high-power microwave system operates differently. It projects electromagnetic energy into a volume of space, creating an effect that can potentially disrupt the electronics of multiple drones within that area at nearly the same moment. The concept is often described as a “one-to-many” capability because a single engagement can affect numerous targets rather than requiring a separate shot for each one. [The War Zone]twz.comarmy puts 50m bet on next gen leonidas high power microwave counter drone techThe War ZoneArmy Puts $43M Bet On Next Gen Leonidas High Power…17 Jul 2025 — Epirus describes IFPC-HPM as an effective, cost-efficient…
That matters because swarms are designed to exploit the opposite condition. Their strength comes from numbers. If defenders must spend one interceptor per drone, attackers can force a costly exchange simply by launching enough aircraft. A system capable of affecting dozens of drones simultaneously changes that calculation. [Defence Finance Monitor+2DroneShield]defencefinancemonitor.comDefence Finance Monitor Non-Kinetic Counter-UAS with High Power MicrowaveDefence Finance MonitorNon-Kinetic Counter-UAS with High Power MicrowaveDecember 8, 2025 — 8 Dec 2025 — They can be overwhelmed by sheer…
The Camp Atterbury event therefore tested more than raw destructive power. It tested whether a microwave weapon could demonstrate the operational characteristic it is specifically intended to provide: area-wide effects against multiple airborne threats at once. [Epirus]epirusinc.comTap to unmute.Read moreEpirusEpirus' Leonidas High-Power Microwave Defeats 49-Drone…10 Sept 2025 — Leonidas neutralized 61-of-61 drones, culminating in a 49…
Why Swarms Stress Traditional Defences
The challenge posed by drone swarms is often described as a saturation problem.
A defender may be able to stop one drone, five drones, or even ten drones without difficulty. The problem emerges when dozens arrive together. Sensors must track them, command systems must assign targets, and weapons must engage quickly enough to prevent penetration of the defended area.
Several pressures emerge simultaneously:
- Time pressure: Operators have less time to react when many targets appear together.
- Magazine pressure: Missile and gun systems carry finite ammunition.
- Cost pressure: Expensive interceptors may be used against very cheap drones.
- Tracking pressure: Large numbers of moving objects increase command-and-control complexity.
Military analysts and defence organisations increasingly point to mass-produced drones as a means of overwhelming traditional defences through sheer quantity. The objective is not necessarily that every drone survives, but that enough get through after defenders exhaust capacity. [The Strategist+2DroneShield]aspistrategist.org.aua counter to drone swarms high power microwave weaponsThe StrategistA counter to drone swarms: high-power microwave weapons12 May 2025 — Military forces must prioritise a counter to drone swa…
This is why the Leonidas result attracted attention. The demonstration targeted the capacity problem directly. If one engagement can affect many drones simultaneously, the defensive system is no longer forced into a one-shot-per-target relationship. [The War Zone]twz.comarmy puts 50m bet on next gen leonidas high power microwave counter drone techThe War ZoneArmy Puts $43M Bet On Next Gen Leonidas High Power…17 Jul 2025 — Epirus describes IFPC-HPM as an effective, cost-efficient…
What the Camp Atterbury Result Actually Showed
The strongest conclusion from the demonstration is narrower than some headlines suggested.
The test did not prove that every future drone swarm can be defeated with a single microwave pulse. Nor did it establish universal effectiveness across all drone types, flight profiles, environments, or operational conditions.
What it did show was that a high-power microwave system demonstrated a large-scale simultaneous engagement against airborne drones under live-fire test conditions. According to Epirus, the event culminated in the defeat of a 49-drone swarm consisting of two representative drone types, while the broader demonstration involved 61 drones across five scenarios. Observers included representatives from the US Department of Defense and allied nations. [Epirus+2Axios]epirusinc.comTap to unmute.Read moreEpirusEpirus' Leonidas High-Power Microwave Defeats 49-Drone…10 Sept 2025 — Leonidas neutralized 61-of-61 drones, culminating in a 49…
The result is significant because it moves beyond laboratory claims. The core question for microwave counter-swarm systems has always been whether they can scale from affecting individual drones to affecting a genuine swarm. The Camp Atterbury event provided evidence that such scaling is at least achievable under demonstration conditions. [Unmanned Airspace]unmannedairspace.infoepirus leonidas defeats 49 drone swarm with one electromagnetic burstUnmanned AirspaceEpirus' Leonidas defeats 49-drone swarm with one…2 Sept 2025 — Epirus has successfully demonstrated its Leonidas coun…
Some reports highlighted an additional point: previous microwave demonstrations often involved smaller groups of drones or required multiple engagements. The Leonidas test was notable because the engagement reportedly affected a much larger group simultaneously, making the “one pulse, many targets” concept the central outcome rather than a secondary detail. [INSS]inss.org.ilinnovative systems for neutralizing drone and uav swarmsLeonidas system successfully intercepted a swarm of 49 drones simultaneously…. It utilizes high-power pulsed microwaves, generated by…
Why the Debate Changed
The counter-swarm debate has increasingly shifted from asking whether microwave weapons work at all to asking how well they work, at what range, against which drones, and under what conditions.
The 49-drone engagement mattered because it provided a visible example of the capability advocates have argued for over many years: using directed electromagnetic energy to impose effects across an entire swarm rather than fighting each aircraft individually. That does not settle every operational question, but it changes the burden of proof. The discussion is no longer centred solely on theory. It now includes a public demonstration in which a large swarm was reportedly neutralised through a single microwave engagement. [Epirus+2Axios]epirusinc.comTap to unmute.Read moreEpirusEpirus' Leonidas High-Power Microwave Defeats 49-Drone…10 Sept 2025 — Leonidas neutralized 61-of-61 drones, culminating in a 49…
In practical terms, the demonstration suggested that future air-defence systems may need to be judged not only by how effectively they destroy one target, but by how many targets they can handle at the same time. Against swarms, capacity can be as important as accuracy. The significance of the Leonidas test lies in showing a potential path toward solving that capacity problem with a single engagement rather than dozens. [The Strategist+2Defence Finance Monitor]aspistrategist.org.aua counter to drone swarms high power microwave weaponsThe StrategistA counter to drone swarms: high-power microwave weapons12 May 2025 — Military forces must prioritise a counter to drone swa…
eBay marketplace picks
Marketplace Samples
Example marketplace items related to this page. Use the search link to explore similar finds on eBay.
Endnotes
-
Source: axios.com
Link: https://www.axios.com/2025/08/28/epirus-indiana-drone-swarm-demo-leonidasSource snippet
The event highlighted a significant advancement in counter-drone technology amid growing global security concerns over drone swarms, whic...
-
Source: droneshield.com
Link: https://www.droneshield.com/blog/a-counter-to-drone-swarms-high-power-microwave-weaponsSource snippet
A Counter to Drone Swarms: High-Power Microwave...Military forces must prioritise a counter to drone swarming tactics with which inexpen...
-
Source: inss.org.il
Title: innovative systems for neutralizing drone and uav swarms
Link: https://www.inss.org.il/social_media/innovative-systems-for-neutralizing-drone-and-uav-swarms/Source snippet
Leonidas system successfully intercepted a swarm of 49 drones simultaneously.... It utilizes high-power pulsed [microwaves]({{ 'microwaves/' | relative_url }}), generated by...
-
Source: youtube.com
Title: Epirus’ Leonidas High-Power Microwave Defeats 49-Drone Swarm
Link: https://www.youtube.com/watch?v=ZrkopSw5uasSource snippet
Epirus' Leonidas High-Power Microwave Neutralizes 61-of-61 Drones Across 5 Flight Scenarios...
-
Source: youtube.com
Link: https://www.youtube.com/watch?v=na0pGfopahMSource snippet
Drone Swarms Are Here. This Technology Could Stop Them...
-
Source: youtube.com
Title: New Weapon Downs Dozens of Attack Drones in Stunning Display
Link: https://www.youtube.com/watch?v=6ZIchtYzVtwSource snippet
Epirus Leonidas HPM: The Premier Counter-Drone Swarm Solution...
-
Source: youtube.com
Title: Epirus Leonidas HPM: The Premier Counter-Drone Swarm Solution
Link: https://www.youtube.com/watch?v=gAmSDdK57o0 -
Source: epirusinc.com
Title: Tap to unmute.Read more
Link: https://www.epirusinc.com/press-releases/epirus-leonidas-high-power-microwave-defeats-49-drone-swarm-100-of-drones-flown-at-live-fire-demonstrationSource snippet
EpirusEpirus' Leonidas High-Power Microwave Defeats 49-Drone...10 Sept 2025 — Leonidas neutralized 61-of-61 drones, culminating in a 49...
-
Source: twz.com
Title: army puts 50m bet on next gen leonidas high power microwave counter drone tech
Link: https://www.twz.com/land/army-puts-50m-bet-on-next-gen-leonidas-high-power-microwave-counter-drone-techSource snippet
The War ZoneArmy Puts $43M Bet On Next Gen Leonidas High Power...17 Jul 2025 — Epirus describes IFPC-HPM as an effective, cost-efficient...
-
Source: aspistrategist.org.au
Title: a counter to drone swarms high power microwave weapons
Link: https://www.aspistrategist.org.au/a-counter-to-drone-swarms-high-power-microwave-weapons/Source snippet
The StrategistA counter to drone swarms: high-power microwave weapons12 May 2025 — Military forces must prioritise a counter to drone swa...
Published: May 2025
-
Source: Wikipedia
Title: Epirus Leonidas
Link: https://en.wikipedia.org/wiki/Epirus_LeonidasSource snippet
Epirus LeonidasThe Leonidas is a high-power microwave (HPM) weapon developed to disable unmanned aerial vehicle (UAV) swarms. It was n...
-
Source: defencefinancemonitor.com
Title: Defence Finance Monitor Non-Kinetic Counter-UAS with High Power Microwave
Link: https://www.defencefinancemonitor.com/p/non-kinetic-counter-uas-with-highSource snippet
Defence Finance MonitorNon-Kinetic Counter-UAS with High Power MicrowaveDecember 8, 2025 — 8 Dec 2025 — They can be overwhelmed by sheer...
Published: December 8, 2025
-
Source: unmannedairspace.info
Title: epirus leonidas defeats 49 drone swarm with one electromagnetic burst
Link: https://www.unmannedairspace.info/counter-uas-systems-and-policies/epirus-leonidas-defeats-49-drone-swarm-with-one-electromagnetic-burst/Source snippet
Unmanned AirspaceEpirus' Leonidas defeats 49-drone swarm with one...2 Sept 2025 — Epirus has successfully demonstrated its Leonidas coun...
-
Source: defenceredefined.com.cy
Title: epirus leonidas defeats 49 drone swarm with one electromagnetic burst
Link: https://defenceredefined.com.cy/epirus-leonidas-defeats-49-drone-swarm-with-one-electromagnetic-burst/Source snippet
Epirus | Leonidas Defeats 49-Drone Swarm with One...14 Sept 2025 — Epirus has successfully demonstrated its Leonidas counter-drone syste...
-
Source: linkedin.com
Link: https://www.linkedin.com/posts/epirus_epirus-leonidas-high-power-microwave-defeats-activity-7371575751776608256-i0zZSource snippet
tic interference. “We believe showcasing our weaponized...
-
Source: linkedin.com
Link: https://www.linkedin.com/posts/thkirkland_epirus-leonidas-high-power-microwave-defeats-activity-7371914377437827073-TLRGSource snippet
romagnetic interference. Leonidas is the only mission-capable...
Additional References
-
Source: facebook.com
Title: on august 26 2025 at camp atterbury in indiana us defense contractor epirus test
Link: https://www.facebook.com/techtimespage/posts/on-august-26-2025-at-camp-atterbury-in-indiana-us-defense-contractor-epirus-test/787324270769980/Source snippet
On August 26, 2025, at Camp Atterbury in Indiana, U.S. defense company Epirus demonstrated its Leonidas high-power microwave (HPM) weapon...
Published: August 26, 2025
-
Source: ndupress.ndu.edu
Title: countering swarms strategic considerations and opportunities in drone warfare
Link: https://ndupress.ndu.edu/Joint-Force-Quarterly/Joint-Force-Quarterly-107/Article/Article/3197193/countering-swarms-strategic-considerations-and-opportunities-in-drone-warfare/Source snippet
Swarms: Strategic Considerations and...24 Oct 2022 — Fully autonomous weapons systems increase the risk of miscalculation and/or misinte...
-
Source: tomshardware.com
Title: Tom’s Hardware High-power microwave system downs 49 drones in one shot
Link: https://www.tomshardware.com/tech-industry/high-power-microwave-system-downs-49-drones-in-one-shot-weaponized-electromagnetic-interference-erases-drone-swarms-en-masseSource snippet
electronics warfare company, successfully demonstrated a major advancement in counter-drone technology with its Leonidas high-power micro...
-
Source: tectonicdefense.com
Title: exclusive epirus leonidas downs [fiber optic]({{ ‘fiber-drones/’ | relative_url }}) drone during tests
Link: https://www.tectonicdefense.com/exclusive-epirus-leonidas-downs-fiber-optic-drone-during-tests/Source snippet
Exclusive: Epirus' Leonidas Downs Fiber-Optic Drone...13 Jan 2026 — Epirus declined to comment on the range of the Leonidas VK, but we'r...
-
Source: evrimagaci.org
Title: leonidas microwave weapon downs drone swarm in indiana 495469
Link: https://evrimagaci.org/gpt/leonidas-microwave-weapon-downs-drone-swarm-in-indiana-495469?srsltid=AfmBOooYbIvmtqoAgb8VDm5Lgn3oWvF5O2zqovYJbbg9ICIYbjXtjVCKSource snippet
Leonidas Microwave Weapon Downs Drone Swarm In...29 Aug 2025 — Demonstrate Leonidas, Epirus's high-powered microwave weapon, successfull...
-
Source: evrimagaci.org
Title: leonidas microwave weapon downs drone swarm in indiana 495469
Link: https://evrimagaci.org/gpt/leonidas-microwave-weapon-downs-drone-swarm-in-indiana-495469?srsltid=AfmBOoqVxt6J-S62DrBSvuiZ534QZSSuHhIKgRYsRNC-Yk80ughmzM8nSource snippet
Leonidas Microwave Weapon Downs Drone Swarm In...29 Aug 2025 — A breakthrough demonstration at Camp Atterbury shows Epirus' electromagne...
-
Source: newsflare.com
Link: https://www.newsflare.com/video/792400/jaw-dropping-new-weapon-knocks-dozens-of-attacking-drones-out-of-skySource snippet
le drone swarms by emitting targeted electromagnetic pulses to overload and...
-
Source: fortunebusinessinsights.com
Title: high power microwave counter drone market 117042
Link: https://www.fortunebusinessinsights.com/high-power-microwave-counter-drone-market-117042Source snippet
High Power Microwave Counter Drone Market Size, Share...9 Jun 2026 — The global high power microwave counter-drone market size is projec...
-
Source: instagram.com
Link: https://www.instagram.com/reel/DWtzaUziPPU/Source snippet
overwhelm the electronics inside drones and knock them out of the sky...
-
Source: securityanddefence.pl
Title: counter-defence aspects of drone warfare
Link: https://securityanddefence.pl/Analysis-of-the-power-of-drones-and-limitations-of-the-anti-drone-solutions-on-the%2C208347%2C0%2C2.htmlSource snippet
Analysis of the power of drones and limitations of the anti-...by MZ Chaari · 2025 · Cited by 10 — High-power microwave systems produce...
Topic Tree