Ten o'clock
Mumbling to himself , Stubbs obeyed . Arrayed in the German uniforms -- the attire of lieutenants -- the three advanced toward where they felt sure the main German entrenchments must be . Hal glanced at his watch in the moonlight . `` Ten o'clock , '' he said . `` Within three hours we should have learned all we need to . As soon as we reach the German lines we shall separate . We 'll meet here again at two o'clock .