The holidays arrived early for hundreds of future soldiers stationed in South Carolina.

Army trainees, on a short break from basic training during Christmas and New Year’s celebrations, were staying on Fort Jackson over the holidays. When they arrived at nearby McCrady Training Center for a planned USO barbecue on Dec. 19, they had no idea of the surprise that awaited them.

The Grammy Award-winning EDM/Pop duo, The Chainsmokers, hopped into their formation as would-be soldiers. You’ll have to watch the video above the find out what happened next.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, visiting the USO center on base and performing a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, visiting the USO center on base and performing a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
9/11 Photos

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
10/11 Photos

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.
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The Chainsmokers visited McCrady Training Center in South Carolina on Dec. 19 to get an up close look at military life, tour the USO center on base and perform a surprise concert for hundreds of future soldiers staying at nearby Fort Jackson for the holidays.

You can send a message of support and thanks directly to service members via the USO’s Campaign to Connect. Your messages will appear on screens at USO locations around the world.