Diego Herrera Carcedo/Anadolu Agency via Getty Images
- US Marine veteran Ethan Hertweck was killed in fighting in Ukraine.
- He died helping a comrade after taking out 12 Russians in his final stand, his family said.
- Hertweck is one of around 46 Americans to have died in Ukraine since the war began.
A US Marine veteran died in Ukraine trying to help a comrade after taking out 12 Russians in his final stand, his family said.