A book full of stories about the military life.
There's a note that it's all fiction, but if you read the whole series, the afterword to the third book explains the meaning of it. (His old colonel regarded that statement as a libelous lie. He wasn't fictitious.)
How our narrator came to be an officer; it involved losing his pants. Also Hogomanay Night, various discipline problems within the ranks -- one of them with a full-blown court martial -- and our narrator's adventures with a train and a board of inquiry that omitted a great deal. His great uncle who had also been in the regiment leads to one story
And there's a general. That story does indeed involve dancing.