I think it's fair to say the majority of the US "Mainstream Media" is overwhelmingly pro-interventalist and by extension pro-military. MSNBC had a clear conflict of interest in the run-up to the Iraq war, with its parent company being a defense contractor, yet ran overwhelmingly pro-invasion stories. A more modern example was the run-up to our involvement with Syria, where you had major network personalities like Jak…
I'd be grateful if you could elaborate - I'm having trouble following the ownership chain, since there was a merger with Comcast I think after the Iraq War.