Major Gen John Gronski said Thursday the face-lifts at the Tapa army base symbolized the North Atlantic Treaty Organisation's "strength and resolve" in the Baltics.
Updated amenities include new sniper and machine gun ranges, maintenance facilities and a train loading area.
Located 80 kilometers southeast of the Estonian capital of Tallinn, the base recently has hosted American military units for training exercises.
Next year it will become the main base for 800 British infantry and 300 French troops.
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