Lights Camera WAR! looks at 50 Indian war films from 1950 to 2020 across various Indian languages and examines their balance between entertainment and history. It looks at factors such as the real history behind the plots; the equipment and uniforms depicted; the use of music in the context and setting or, as often in Indian films, as a narrative device in the nautanki tradition, or for temporary relief; and the use of "filmy" coincidences, and other plot devices. The author's sometimes surprising view is that some Indian war films classified as "flops" deserved more respect, at least in that they have been authentic in the depiction of history while some "hits" leave much to be desired.

There are also comparisons with Hollywood and the West, where war films form a distinct genre. Some Indian war films, including major hits, are clearly "inspired" by such Hollywood films, and what they lose (or gain) in transplanting to the Indian screen is also discussed. The book also includes small historical capsules for comparison with the on-screen action, to illustrate how far the Indian war film accurately presents the history, serves as 'masala' entertainment, or manages a balance between them.