Wagner’s claim could not be verified at the time, and Russian state media has since claimed, without evidence, that the men were mercenaries.
The war in Ukraine is a humanitarian quandary. Conditions in some areas are too perilous for residents to stay put, or for many international organizations to allow their staff to venture in, said Abby Stoddard, a humanitarian policy analyst.
So some of the riskiest evacuations are being carried out by independent volunteers — “in other words, the ones who have the least amount of resources to keep people safe,” Ms. Stoddard said.
Bryan Stern, a U.S. veteran who co-founded a humanitarian rescue operation, described front line evacuation efforts in Ukraine as a “free-for-all.” While foreign volunteers came to Ukraine with good intentions, he said, most have “no idea what they’re doing.”
“This is really why this is a sad story,” he said.
Mr. Parry was a software engineer who wanted to travel the world, his family said.
In early January, he told the local BBC station in Cornwall, where he grew up, that he “knew nothing” about Ukraine before the invasion but “became obsessed” with helping. He intended to enlist with foreign fighters, but, having no combat experience, instead bought a van and began working as an evacuation driver last March.
In an Instagram post made days after his arrival, Mr. Parry wrote that he felt apprehensive about a planned journey to Kharkiv because “everyone I have spoken to about it believes there’s a very strong chance of me dying.”