As per reality, violence comes in sharp bursts. In the opening two episodes there is one 2-3 second view of the gory after-effect of a fighter plane's bullet hitting a human face. The rest of the violence is shocking but not graphic. It's reasonable to expect more of the same over the rest of the run, based on its two sister shows.
Two fortresses are shot down and we see the man shot down within them. Of the men is shot in the shoulder and the man next to him is shot in face and there's a brief but graphic image of his mouth and most of the skin missing.
Two men are seen with frostbite but the wounds are that bad.
While drunk, Bucky forces Curtis to punch him in the face. More comedic than violent.
A fortress is forced to crash land off the coast of Scotland.
A bar fight is seen and a man is punched and knocked out.
A man has a gun pulled on him where he raises his hand but is shot through his hand and in the face. He is seen face down on the ground with an exit wound on the back of his head. He is shot again off-screen.
A man is shown with his legs blown of and bloody stumps are seen.
Many close up shots of wounds, such as bullet wounds or someone's face being torn off. However, these shots mostly only last a few seconds.
In one scene a Man was sucked out of a Fortress and we can see him being cut in Half by a Wing of a Fortress flying behind them.