We can't 'realistically' expect the war to end soon. = 'Realistically', we can't expect the war to end soon.
The battle scene in the movie was very 'realistic'. [=it seemed very much like a real battle]
We have to be 'realistic' and accept the fact that these problems cannot be solved easily.
(..) - What did I do? - Shut up. He's clean, Sarge. Damn! Muse, will you take these things off? - Shit. You put them on so tight. - I like realism. You never know who's watching, Brian. Nice crib, Sergeant. It's a lot nicer than the last place you confiscated. Ain't it? Eddie Fisher built this house (..)2001 The Fast and the Furious