Common Sense Note
Parents need to know that violence and death in this war drama includes gunfire casualties at close range (with blood), a helicopter crash, and a car wreck -- the latter actually being a suicide. One character is a drug addict, and the hero has a drinking problem (but seems to kick the habit). Swearing is R-level, with the f-bomb and the c-bomb dropped on a few significant occasions, and there's one use of an anti-Arab slur. The script is not exactly anti-military, but lethally mutinous actions happen, and undercurrents persist of generals and Pentagon spin doctors covering up and suppressing the truth.
Sexual
Content
One off-color reference about "humping cheerleaders." Hunky guys in a locker room.
Violence
Battlefield violence includes characters set on fire and shot at close range and bleeding. There is a spectacular, explosive suicide via car-train collision.
Language
The s-word, the f-word, "ass," "Jesus Christ," the c-word (as pertaining to females), the racist slur "ragheads."
Social
Behavior
The military setting brings out themes of the slippery nature of "truth" in battle heroics and taking responsibility for one's actions -- even in a desperate situation under dangerous enemy fire. Along with it is the idea of sacrifice, bereaved families, and under-the-radar grief in war causalities (the hero snubs a Presidential ceremony to instead privately comfort a lost soldier's grieving relatives).
Consumerism
The hero uses Apple laptops.
Drugs / Tobacco /
Alcohol
Characters smoke. Serling drinks to steady his nerves after combat flashbacks and is accused/blackmailed about being an alcoholic. Soldiers in a VA hospital take pills and IV medication, sometimes to excess. One character confesses to being an IV drug abuser (which may or may not have been a consequence of war trauma).