Lord, Grant me the greatness of heart to see,
the difference in duty and his love for me.
Give me the understanding to know,
That when duty calls he must go.
Give me a task to do each day,
to fill the time when he is away,
And Lord, when duty is in the field,
Please protect him and be his shield.

- Author Unknown

I found this prayer in the back of The Soldier’s Bible (HCSB).