Forgotten doodle rediscovered

My daughter is getting married and moving, and in the course of clearing out the old apartment, found this drawing, which she claims was done by me.

No doubt I scrawled it down on one of the many occasions when we sat together at a table, talking, laughing, drawing or writing.

I'm touched and flattered that she found it worth keeping, but I have no idea what it's about. The kepi suggests the French Foreign Legion, but why would we have discussed that?

Unless it dates back to high school history days...

'Tis a mystery.