Isaac Alexander Mack, Letters from France
“ It is glorious weather; you can hear the birds and the faint hum of an aeroplane, with occasionally the noise of anti-aircraft shells bursting round one, just a faint crump and tiny little fleecy white clouds clustering round a black speck in the sky. It is a perfect almost summer day. There is one point about shell fire that may interest you. A battery of guns fires on a target, say a farm house. The guns are a long way back, and, of course, cannot see their target. ”
