Polish 1st Armoured Brigade "defenders of Westerplatte" (1 Brygada Pancerna im.

Bohaterów Westerplatte) or Polish 1st Warsaw Armoured Brigade (Polish: 1 Warszawska Brygada Pancerna) was a military unit in the Ludowe Wojsko Polskie.

The modern version of the 1st Warsaw Armoured Brigade was formed in 1994 and was subordinated to the 16th Pomeranian Mechanised Division.

On August 29, 2019, the brigade was transferred under the command of the newly formed 18th "Żelazna" Mechanised Division, which is intended to help safeguard Poland's eastern border.

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