When sighting my 1918 DWM I find I have to raise the front sight by tipping the gun back slightly, finding it, then lowering the gun to get the front sight inside the "V" notch of the rear sight. Very hard to keep my focus on that tiny front sight blade!
Tip-Ex on the sides of the "V" and the top rear of the front sight blade has helped.....
I've never seen artillery... at least... not yet