I gather this is a war memorial, though I don't know which one. That's a tough thing for a motivational poster as it really needs to connect instantly and completely with the viewer.
The photo itself is nice, though there are areas where it is poking out from its border. This sort of comes across as lack of attention to detail, even if it was done by choice.
Good match of quote with imagery. A different placement of the quote and a bit stronger style of font may have given it more impact.