nearly one
o'clock
She seemed only to have been asleep for about an hour , when the patrol touched her on the shoulder . Instantly she sprang up , broad awake . `` Relieve sentry at west guard , '' was the order , and the patrol passed on . It was too dark to see her watch , but Ulyth knew it must be nearly one o'clock . She hastily donned the warm garments ordered to be worn by sentries , and hurried away to relieve Helen Cooper . Her post was at the west end of the camp , where the field merged into a rushy swamp before it rose into the hill that led towards the farm . `` The password is ` Louvain ' , '' said Helen , retiring , not at all sorry to seek the comfort of her bed .