[dr_lew]

Cited in english with reference by the Wikipedia article, Fog of War :

"The great uncertainty of all data in war is a peculiar difficulty, because all action must, to a certain extent, be planned in a mere twilight, which in addition not infrequently — like the effect of a fog or moonshine — gives to things exaggerated dimensions and unnatural appearance."

Looks good, but he doesn't say "the effect of", just, "like [a] fog or moonlight" ... "wie eine Nebel oder Mondscheinbeleuchtung"

[HD1200]

“because all action must, to a certain extent, be planned in a mere twilight, which in addition not infrequently — like the effect of a fog or moonshine — gives to things exaggerated dimensions and unnatural appearance.””

He writes of planning not the physical activity of a war.

Unexpected and unknown physical attributes of a war are termed FRICTION.

Don’t argue with me; argue with my one son’s USAF & my other son’s Marine books.