My grandfather fought in WW I.
The following appeared in 'The Daily News' newspaper shortly after his death on April 10, 1980.

It was April 13, 1918, a bright clear beautiful day. The 1st Battalion of the Royal Newfoundland Regiment was surrounded. Billy Antle was a Battalion runner. It was his duty to take messages to brigade headquarters. He was sent off to brigade to tell them the story. How in the world he ever got there in broad daylight, without being captured, nobody will ever know from that day to this, but he made it.
When he arrived at brigade, he met Billy Hall, and there hangs another story. Billy Hall was the Brigade runner. He was a Newfoundlander, who had served with the Newfoundland Regiment, but, for some time past, had been attached to Brigade Headquarters, which was considered a fairly cushy job, as brigade runner, but he wasn't happy. He wanted to get back to his own battalion, amongst his own friends from Newfoundland.
So in September he applied to be transferred back. His application was approved. [He was killed in action on October 14th, 1918]. The two Billies went and saw the Brigade Major and told him the story about the battalion being surrounded. He went off and consulted with his staff. Shortly after, he came back and he asked Billy Antle, "Billy, do you think you can get back again?" "Oh, yes Sir," said Billy, "I think so." "Well, " said the B.M. "here's what we are going to do.
Of course, we have got to try to save the battalion, get them out, what's left of them, if we can. But, obviously, you can't do it in broad daylight, so we will wait until after dark and we will go in again. We will take a roll of white tape with us and we will unroll it as we go and, if we get in, and the Germans haven't spotted the white tape in the meantime, it will help us to get out again, with, we hope, what's left of the battalion."
It worked. At about eleven o'clock that night, those of us up in the front line got the message. The battalion is surrounded. Billy Antle is going to bring us out on a white line. Keep your mouth shut, your ears open, don't make a sound, and follow the leader.
And that's how Billy Antle became known as "White Line Antle." He saved the battalion. Billy, my friend, you were some man, some soldier.
May you soul rest in peace.