I'm looking for French and German songs of the Great War period for a living history group songbook, Can anyone help me please?

I'm after any kind of song of the period, 'popular/music hall type, sentimental, cynical, military or civilian - I have one or two, but not enough.

Does anyone have the French words for "Treue Husar" (I believe it exists as both a German and French song).

A final question. Is the "Englandsleider"/"Marinerleider" ("Wir fahren gegen England") a First World War song? I know the lyrics predate the Great War, but when were they set to music?

Thanks.

Walrus

p.s. Apologies for any spelling errors in the German, but I have enough problems with English.