There is mounting evidence that Ukraine has been taking heavy casualties in its counteroffensive, which began roughly ten weeks ago.
ABC News spoke with two former U.S. soldiers who are contracted in a special forces division of the Ukrainian military and who were both injured during an operation in eastern Ukraine two weeks ago
The men said their team's mission was to seize control of a village on the outskirts of Donetsk city, which has been occupied by a Russian-controlled militia since 2014.
One of the men, a former U.S. soldier from Texas who goes by the callsign "Tango," said his unit of "dozens" of men took "85% casualties
