Some kissing

Suggestive content and sexual humor in most all episodes of the first five seasons but it gets less frequent after that. Nothing ever gets too vulgar or graphic.

Hawkeye and Trapper are womanizers, they constantly try to sleep with women, usually their attempts are fumbled, BJ is married and only has one case of infidelity with a kiss and nothing more before rectifying this.

In the OP is always blood visible

Sometimes one get shot

Some combat sequences are shown throughout the series. Most are not too violent or graphic but most show the aftermath.

In the TV blooper outtakes of M*A*S*H, actors often use words like "Goddammit", many uses of "Shit" and a few uses of "Fuck" which is not used in the final cut TV show episodes as TV shows were censored at that time in the 1970s.

Infrequent mild language, like "hell","tits" and "damn".

Hawkeye drinks all the time. He even has his own homemade still in his tent.

Sometimes one is addicted to morphine

There is a scene where someone is shown drinking and driving in a Jeep. It is played for laughs as the driver is shown having problems operating the vehicle.

Some drinking and smoking.

There is an episode about Winchester taking medicinal pills which he eventually becomes addicted to.

Many episodes show characters in peril common to war such as firefights, targets of mortar fire and snipers, aerial attacks, standoffs, getting lost, the harsh constrictions they are living in, and more. Despite the shows comedic tone, these scenes can sometimes be very intense and suspenseful.

There are many heavy topics discussed, such as trauma and violence. The atmosphere is generally light-hearted, but some episodes and later seasons are far more intense than the rest. The series finale is particularly emotionally intense and disturbing.