A soldier makes his children pledge to behave while he is away.
Translation: My dear children, I am sure that you are having fun because I haven't received any news from you. I know that you are still active and that Grandpa and Grandma are doing well. Be sure to be good otherwise when I get back, and I believe that it will be very soon, I will improve your behavior. Give a kiss to Grandpa and Grandma for me, and keep a cuddle for yourself from your dad.
Family, Father, Children