Advantages and disadvantages of a genre.

An advantage of a genre is you can know weather it's your type of film.

A disadvantage of a genre is you could predict what will happen in the end.

Style of a war genre

For cinematography they would use long shot , close up , panning , tracking , high angle , hand held , mid-shot and point of view.

For Mise en scene they would use dark lighting to show fear and brightness to show success. 

Narrative/plot in a war genre

A group of soldiers go to save someone who has been kept hostage by the enemy army.

A group of soldiers go to another armies base to assassinate somebody. 

Props from a war genre.

Guns.

Armor.

Knifes.

Tanks.

Planes.

Ammunition.

Grenades.

First aid kit.

Characters of a war genre

Soldiers.

Hostages from the public.

Medical helpers.

Tank drivers.

Plane flyers.

Themes of a war genre

Revenge.

Honor.

Bravery.

Betrayal.

Failure.

Accomplishment.

Setting of war genre

Any country.

War field.

Ghost town.

Trenches.