Given that that there was a significant amount of Belgium and France behind German lines in WW1, I would imagine that there would have been a resistance movement in these areas to sabotage the German war effort. Yet in spite of all I have heard of the resistance French resistance movement in WW2, I’ve heard nothing about such a movement in WW1.
Was there such a movement? If so what did they do and why haven’t I heard of their activities. If not, why not?
Given that there was such a vicious German response to false rumors of partisan activities early in the war, it wouldn’t surprise me that it didn’t develop on a significant scale.
I never heard of any country in WWI actively encouraging guerrilla fighting in its behalf, possibly due to contempt for civilians engaging in war. This obviously changed radically during WWII.
Assuming that the OP is not thinking purely in terms of civilians taking up arms: I understand (can’t give much in the way of citation) that in occupied Belgium in World War I, a very considerable amount of non-violent resistance activity took place. This was, largely, in the shape of gathering intelligence about German movements and doings, and secretly passing same to the Allies; and getting Allied military personnel trapped in Belgium out, and back to their own countries, usually via neutral Holland. The British nurse Edith Cavell, executed in Brussels on October 12th 1915 for anti-German activities, was – in partnership with Belgian resistance workers – engaged in thus facilitating the escape of Allied servicemen.
There’s a book, The Secrets of Rue St. Roch, by Janet Morgan – an account among other things, of WWI pro-Allied intelligence work by citizens of German-occupied Luxembourg, involving observing rail-traffic movements connected with German army activity, and secretly transmitting information obtained, to the Allied side. I personally found the book, largely dull and trite, and overall a tedious read; but some of the subject matter is interesting, especially if one is intrigued by the workings of “spy-craft”.