My country, Finland, would have ended up as another Eastern Block Soviet State if our grandfathers hadn't fought hard against Stalin's massive Red Army hordes. Instead their struggle and sacrifices ensured that our nation remained free and independent: Finland was - along with Britain - the only warfaring European country in WW2 that was never occupied.
So, our veterans deserve the highest respect.
Leftists naturally loathe them for the very same reason I respect them.