NATO Tests 100s of UGVs in Latvia, Exposing Starlink Link Failures in 50% Forest Cover
Updated
Updated · Breaking Defense · May 13
NATO Tests 100s of UGVs in Latvia, Exposing Starlink Link Failures in 50% Forest Cover
1 articles · Updated · Breaking Defense · May 13
Hundreds of unmanned ground vehicles are being tested at brigade level for the first time during NATO’s May 5-15 Crystal Arrow exercise in Latvia, where operators reported major communication breakdowns in dense woodland.
Starlink-equipped UGVs lost high-speed links or line of sight under tree canopies, Latvian operators said, forcing reliance on backup medium- and short-range radios rather than a single satellite connection.
The problem also hit aerial systems: Canadian troops flying Raven-B drones said Latvia’s tall, dense tree lines interfered with signals during reconnaissance missions.
Latvia’s terrain makes the issue structural rather than incidental—forests cover 50% of the country, versus about 16% in Ukraine, where combat robots operate in a more open environment.
Latvian officers said that means Ukraine’s robot-warfare lessons cannot be copied directly, with close sightlines and harsh winters requiring different tactics even as countries push wider UGV adoption.
After Starlink failed in Latvian forests, can new AI and mesh networks make NATO’s robotic forces combat-ready?
With US support now limited, can Europe's drone armies overcome the critical tech failures revealed in Latvia's forests?
Ukraine is building 25,000 ground robots. Why does NATO's test suggest this strategy might fail in a wider war?
Crystal Arrow 2026: NATO’s Unmanned Ground Vehicles Expose Starlink Weaknesses and the Race for Redundant Battlefield Networks
Overview
NATO's Crystal Arrow exercise, held in Latvia in May 2026, focused on testing hundreds of unmanned ground vehicles in the country's dense forests. The exercise aimed to integrate lessons from the Ukraine conflict and assess how well these robotic systems could operate in challenging terrain. Early in the exercise, significant problems with Starlink satellite communications emerged, causing frequent failures for both ground vehicles and drones. This unreliability made it difficult to maintain command and control, highlighting the risks of depending on a single communication system and underscoring the need for more resilient and diversified networks in modern military operations.