In 1940, the Fantom strip was written by George Kapitan as well as Paul Gustavson and Frank Thomas. No extant evidence exists that is known as to who wrote this particular story.
Same applies to the artist of the story. Besides Gustavson, other known artists include Al Anders and Will Roland.
Illustrated text story.
Story originally indexed with feature as "Lieutenant Lank": corrected by Bud Plant, December 2007. Credits from Jerry Bails's Who's Who.
Kildale signs in the final panel.