Ukrainian 503rd Marine Battalion Flag represents one of the most elite and active marine units within the Ukrainian Armed Forces. The 503rd Separate Marine Infantry Battalion, based in Mariupol, has gained wide recognition for its courage and combat readiness in defending Ukraine’s sovereignty during the Russian invasion.

The flag features the battalion’s official insignia — a stylized badger symbolizing tenacity and resilience — along with the unit motto:
“Якщо наступ — то ми!” (“If there’s an offensive — it’s us!”).

Historical Background – 503rd Marine Battalion “Barsuk”:

• Formed: 2015 as part of Ukraine’s Naval Infantry reform

• Role: Rapid-response assault force within the Ukrainian Marines

• Operations:

  • Defense of Mariupol and coastal areas

  • Active combat during the 2022–2024 full-scale Russian invasion

  • Known for spearheading counter-offensive operations in the south and east

The unit’s professionalism and distinct identity have made it a symbol of Ukraine’s modern marine force.

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