I like science fiction, and have been (re-)reading Jack Campbell's The Lost Fleet. It's about John Geary, a space Navy commander whose ship is unexpectedly destroyed at the start of a war. He gets into a damaged "survival pod" and is put into hibernation.
He's awakened to find that nearly a century has passed, the war is still going on, and the government has made him into an impossibly heroic figure.
Because of the war, tactics have been forgotten by both sides, except for "close with the enemy, and beat them to a pulp".
Circumstances force him into the role of fleet commander, and he must take the remainder of the fleet through enemy space while overcoming shock (everyone he knew has died), teaching the fleet better tactics, and overcoming political maneuvering within the fleet.
The books are engaging, although I have a few quibbles. The plane of the star systems are referred to as such, rather than the easier "ecliptic". Velocity is referred to as "tenths of the speed of light", whereas I'm sure something like "c" or "d-c" (deci-c) would have developed. Finally, the spacecraft somehow swing around in loops, rather like aircraft or boats, even though spinning about and using the main thrusters would be a better way to kill velocity and retrace one's path.
The stories are enjoyable, and the tactics seem reasonable. I found that having a pad and pencil to sketch the formations was quite helpful.