Both Uses

reflection
in
All Quiet on the Western Front
(Edited)

They arise no more; we are dead and they stand remote on the horizon, they are a mysterious reflection, an apparition, that haunts us, that we fear and love without hope.
p. 121.9

reflection = image
In the quiet hours when the puzzling reflection of former days like a blurred mirror, projects beyond me the figure of my present existence, I often sit over against myself, as before a stranger, and wonder how the unnameable active principle that calls itself to life has adapted itself even to this form.
p. 273.7 *

reflection = image shined back

Definitions:

(1) (reflection as in: my reflection in the mirror)
an image (seen on a mirror or other shiny surface)
(2) (reflection as in: lit by the reflection)
light seen after it bounces off a surface to another; or the process of bouncing light, sound, or other energy off of a surface
(3) (reflection as in: is a reflection of American values)
something that indirectly shows something else -- such as an indication, demonstration, expression, or representation of something
The exact meaning of this sense of reflection depends upon its context. For example:
- "The students' behavior is a reflection on the school." -- indication of quality
- "She says the immorality in the movie is a reflection of American values." -- expression or representation
- "It was a reflection of the selfishness she had seen growing for years." -- demonstration
- "The surrounding panic found no reflection in her." -- expression or demonstration
- "I saw no reflection of jealousy in her action." -- indication or sign
(4) (reflection as in: After reflection, I think...)
careful thought
(5) (reflection as in: a humbling reflection (memory))
memories and thoughts about them
(6) (meaning too rare to warrant focus)
See a comprehensive dictionary for less common meanings of reflection.