To the north, as far as the eye could see, the army of King Ferdinand of Bulgaria spread out, a mass of moving energy. Faint puffs of smoke dotted the Bulgar line as far as the eye could see.
"Cannon!" said Hal briefly.
To the south, the Serbian line moved forward. It, too, spread out on either side as far as the eye could reach and puffs of smoke rose steadily, shutting out the view of the moving men.
"More cannon," said Chester.
"We seem to be safe enough for the moment," said Hal. "The shells are passing over us. But if one side or the other should advance as far as this house, we would be in imminent danger of being struck by shells from the other side."
"Well, one side is bound to advance sooner or later," declared Chester; "but I guess there is nothing for us to do but wait and watch the progress of the battle."
"You fellows can watch all you want to," said Stubbs. "I'm going down stairs where I won't be able to see a shell coming."
"It won't make much difference whether you are up here or down there if a shell hits this house, Mr. Stubbs," said Chester.
"Maybe not; but I won't see it and that will help some."
Stubbs betook himself below.