Speaking exclusively to CNN, a former US serviceman fighting with Ukrainian forces recounted the battle he witnessed on June 9 when American volunteer fighters Alexander John-Robert Drueke and Andy Tai Ngoc Huynh were reportedly captured by Russian forces. 

The man, who asked to be identified with the code name "Pip," said his team was sent out on a mission east of Kharkiv where a full scale Russian armored assault was underway.

Drueke and Huynh fired a rocket-propelled grenade (RPG) at a BMP vehicle — an infantry fighting vehicle — that was coming through the woods and destroyed it. But the team had to quickly withdraw as more than 100 Russian infantry began advancing and the American fighters found themselves in a village they previously thought was in Ukrainian hands. 

When asked about what happened to Drueke and Huynh, Pip said that "we suspect they were knocked out by either the T-72 tank shooting at them or by the blast of the mine. This is only speculation we don't know what really happened to them." 

A photo of the two men emerged Thursday with their hands tied behind their back and in the back of a Russian truck. 

"I know for a fact that Andy and Alex did not come here for money, they did not come here for glory. They came here with a firm belief that Ukraine as a blossoming democracy needs help," Pip said during the interview.
"As far as I'm aware, we're paid about the same if not exactly the same as a Ukrainian soldier who is on the front... And money is certainly not my motivation for being here. And I know that it's not Andy's and it's not Alex's either."

More background: On Wednesday, CNN reported that Drueke, 39, from Tuscaloosa, Alabama, and Huynh, 27, from Hartselle, Alabama, had been missing for nearly a week and there were fears that they may have been captured by Russian forces, according to their families and a fellow fighter. Drueke and Huynh had been fighting alongside Ukrainian forces north of Kharkiv.

CNN on Thursday reported a third American whom the State Department had identified as missing in action in Ukraine was US Marine veteran Grady Kurpasi. He served in the US Marine Corps for 20 years, retiring in November 2021.

Read more here.

CNN's Kate Sullivan and Jonny Hallam contributed reporting to this post.