【Saudi F-15 Defeated by Yemen's Complex Terrain】 The Houthi forces shot down a Saudi F-15 fighter jet, demonstrating not only the threat posed by air defense systems and their difficulty to suppress, but also how complex terrain makes even advanced aircraft vulnerable.
This partly explains why the Houthis, with limited tools, managed to shoot down aircraft—while Iran, seemingly stronger, has at best only damaged U.S. planes.
The complicated topography of the combat zone is the key to understanding how the so-called "slipper army" could defeat an F-15. (See Figure 2, combat results)
The core areas controlled by the Houthis lie within one of the most rugged mountainous regions in Yemen: mountains exceeding 3,000 meters in elevation, deep valleys, high plateaus, and dramatic altitude changes occurring over very short distances. This presents enormous challenges for ground forces—and is extremely problematic for radar and aircraft alike.
Taking Sana'a as an example, it sits at an elevation of over 2,200 meters, with the Haraz mountain range rising directly to its west. Nearby, Mount Prophet Shu'ayb reaches 3,666 meters—the highest peak on the Arabian Peninsula. (See Figure 1)
Any aircraft attempting to approach Sana'a from the Red Sea direction must first rise from the low-lying Tihamah region, then confront a series of elevated ridges soaring above 2,000 and even 3,000 meters before reaching the Sana'a basin.
Each mountain creates a radar shadow behind it, while every canyon can conceal radars, transmitters, or observers.
Anti-aircraft units can remain hidden until the moment the aircraft enters the engagement window.
Taking Marib as another example—the location where this F-15 was shot down.
Marib lies at an altitude of over 1,100 meters, but the terrain rapidly rises toward the western highlands and the direction of Sana'a, climbing past 2,000 meters.
Any aircraft operating above Marib and approaching the highlands of Yemen will transition from lower basins into a network of mountain edges, plateaus, and canyons.
Thus, instead of a single exposed surface visible to radar, the terrain constantly cuts off lines of sight and continuously creates areas that cannot be monitored continuously.
Topography is anti-aircraft defense.
The Houthis have built their defense precisely around this terrain.
They do not rely solely on large, continuously operating radars that expose their positions. Instead, they combine radar, visual spotters, electro-optical and thermal imaging sensors, and passive detection methods—activating combat measures only at the optimal moment.
The Americans have suffered too.
In March 2025, a U.S. F-16 fighter was ambushed by missiles over Yemen, receiving warning just 15 to 20 seconds before impact.
Afterward, U.S. military officials admitted they could not fully understand Yemen’s air defense network, because the Houthis integrated radar, visual surveillance, thermal imaging, and electro-optical sensors—none of which appear identically on radar warning equipment.
During that engagement, U.S. aircraft launched approximately 50 anti-radiation HARM missiles against Yemeni air defenses, engaging in over 20 separate exchanges.
In contrast, Iran possesses what appears to be more advanced air defense systems; Syria has extensive battery networks; southern Lebanon benefits from mountainous terrain.
But in Yemen, all three elements are present: towering, intersecting mountain ranges, mobile and concealed air defenses, and passive detection methods that do not require continuous radar operation.
Therefore, pilots flying over Yemen face not just a single missile—but also missiles, mountains, canyons, altitude variations, radar shadows, and ambushes.
A seemingly primitive air defense system becomes highly threatening amid Yemen’s mountainous terrain.
Original article: toutiao.com/article/1876528831569932/
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