I've never been an admirer of tatoos, I think they're bloody awful things.
My Dad had a tatoo of a bluebird on his forearm and one night I asked him if he ever regretted having it done.
He told me that it was just something that was expected when you were in the armed forces so if you got your head blown off and your dog tags were lost it was something to identify your body by.
Dad was never one to share his war experiences but he told me that three of them had the same tatoo done at the same time whilst on a bit of leave. They returned to their unit and a week later my Dad was sent out into the jungle to look for a patrol that hadn't returned. They found them all dead (killed by the Japanese) including his two pals.