"Alexander Drueke, 39, and Andy Huynh, 27, both from Alabama, are "among a number of U.S. veterans who have traveled to Ukraine to join or assist the Ukrainian military as it attempts to hold back the Russian invasion," Dan Lamothe reports for The Washington Post. They were part of a wave of volunteers from a number of countries who flocked to Ukraine after the war broke out: While early reports probably overstated the number of foreign fighters at around 17,000 — and while estimates are tricky — the current number is believed to be somewhere from "several hundreds to a few thousands," the Counter Extremism Project reported in May."