Last card sent to family in Ireland from William Wilby

This is the last card that my uncle William Wilby sent home to his family from the front. He joined the war in 1914 with his brother in law who was killed in action in Gallipolli in 1915.
It is a Christmas card for the 16th Irish Division sent in 1917 with a note "I haven't had time to write to you all."
He died in October 1918 in a prisoner of war camp.