sentences:  Posted to the 34th Division headquarters on Salisbury Plain, he developed his humorous series for the "Bystander" about life in the trenches, featuring "Old Bill", a curmudgeonly soldier with trademark walrus moustache and balaclava.The best remembered of these shows Bill with another trooper in a muddy shell hole with shells whizzing all around.The other trooper is grumbling and Bill advises