Typically, they often feature an older protagonist involved in war. For example, in 'Old Man's War', the main character is an old man who enters a new kind of military life. They usually show the contrast between the experience and wisdom of the old and the brutality of war.
Sure. 'Old Man's War' by John Scalzi is a great one. It's a military science - fiction novel that follows the story of an old man who enlists in the military in space. Another one could be 'The Forever War' which also has elements of war and the experiences of soldiers in a different kind of setting.
It's a great sub - genre. In 'old man's war' military science fiction, there's often a focus on how the elderly are given a new lease on life in a military context. For example, they might be rejuvenated to fight in interstellar wars. It usually explores themes like sacrifice, second chances, and the brutality of war in a futuristic setting.
The unique part is the use of old men in the military setting in a science - fiction world. It's not common to see the elderly as the main military force in most stories.
Often, these books tend to be quite bleak. They show the harsh reality of a post - nuclear war world. The old women characters in them might be symbols of the past that is now lost. For example, they could remember the world before the war and contrast it with the desolate present. Their stories are usually about survival and how they adapt to the new, often unforgiving environment.
There is also 'Z for Zachariah' which is about a young woman who believes she may be the only survivor of a nuclear war. It was written around that time period and delves into themes of isolation, survival, and the human spirit in the face of such a cataclysm. It gives a good look at how a female character copes in a post - nuclear world.
There is also 'The Ghost Brigades' which is related to the 'old man's war' series. It delves deeper into the military and ethical aspects of the universe created in the 'old man's war' concept. It has engaging characters and a lot of action scenes that keep the reader hooked.
Another characteristic is the use of the old man's wisdom to overcome challenges. In war and adventure situations, the old man may not have the physical strength of a younger person, but his knowledge and cunning can be his greatest assets. In 'Sharpe's Tiger', the old Sharpe uses his years of military experience to outwit his enemies.
One well - known 'the old man's war novel' could be 'Old Man's War' by John Scalzi. It's a great read with interesting concepts about war in a science - fiction setting.