WW2 message to my Dad

I was looking through some stuff today and came across this, mum sent it to Dad when he was in the Army during the war. He carried it with him and when he came home she framed it and had it on the wall.  I think it's lovely thats why when she died I kept it as a reminder of the love they had for each other. They had been married 53 years when he died in 1992 and had grown up together  since the early 1910's when they were children. Mums stepmother was dads Auntie. After their mum died when they were very young she brought up Dad and his two sisters as their father didn't want them when he married another woman.