I'm not trying to be a dick about this man but...nothing about that screams batman. Over all the sketches we saw of the event bringing Bruce back had very batman like qualities to them.
having horns on the helmet that look vaguely batlike does not make a batman costume.
Look at Red Son Batman or Gotham by gaslight batman or even that JSA elseworlds story, those are all very batman like costumes modified to fit with the timeline their in.
In fact that JSA elseworlds did have WW1 batman, that was how you do that costume for WW1.
I like the drawing, you just have to get rid of the wings and call if WW1 Wesley Dodds.