noon
As the automobile approached the British line , an officer , with several men , advanced with a command `` Halt . '' Hal obeyed , and leaped lightly from the car . He identified himself to the satisfaction of the British officer , and Hal swung the car sharply south , heading for the distant American sector of the battle front . They were forced to go more slowly now , as the ground came to life with soldiers , so it was almost noon when they came in sight of that section of the field where the American troops were quartered . Leaving McKenzie and Stubbs in the car , Hal and Chester made their way to the headquarters of General Pershing . They were admitted immediately . `` Back so soon ? ''