1.   Arthur says that he is joining the army so that by his going away no one else will have to leave Hayslope.

2.   At this point William made a momentous Decision -- he resigned from his job and joined the army.

3.   Before they join the army, young recruits are put through a particularly grueling endurance course.

4.   Frank lied about his age in order to join the army.

5.   He joined the army, and was immediately sent to the front.

6.   He straightened out when he joined the army.

7.   He wanted to join the army but his health was too poor.

8.   I decided to join the army.

9.   It was a good way to see a lot of the world, without joining the army.

10.   It was as unthinkable now as their joining the army.