In the other lines there seemed the better part of two brigades, and the first trench was stiff with bayonets.

My first thought was that Home Forces had gone dotty, for this kind of show could have no sort of training value.

And then I saw other things--cameras and camera-men on platforms on the flanks, and men with megaphones behind them on wooden scaffoldings.

One of the megaphones was going full blast all the time.
I saw the meaning of the performance at last.

Some movie-merchant had got a graft with the Government, and troops had been turned out to make a war film.