B is a tough one. Simply because there are so many to choose from
To name a few but I had to chose one that impacted me and had me so certain that in war there were always the good guys and the bad guys. Today as a pacifist I feel that in war there are no innocents and that most are pawns to great powers.
I still love watching the glossy distortions of history that great films provide and I love that as audiences become more sophisticated Hollywood and all other film industries try to be as historically accurate as possible.