Donald Duck, still in the United States Armed Forces, is busy peeling potatoes. Of course, that's not what Donald really wants to do. He wants to fly! Flight Sergeant Pete offers to give him the opportunity, but, when Donald accidentally pokes him with a tack and knocks him out of a window, decides to do something a little more sinister to the unsuspecting duck.
This short reveals the name of Donald Duck's boot camp to be Mallard Field Air Training Base.
Pete's official rank is revealed to be that of Flight Sergeant.
An edited version of this film was used in This is Your Life, Donald Duck (1960). The special showed no gap between Sky Trooper and Donald Gets Drafted. The implication is that Sky Trooper takes place very shortly after Donald Gets Drafted. Since Donald Gets Drafted likely takes place in 1941, this means that Sky Trooper may take place in 1941 as well.
A possible reference to the General from The Vanishing Private is made at the end when Pete and Donald crash into a certain General's headquarters.
• Don Donald • Modern Inventions • Donald's Ostrich • Self-Control • Donald's Better Self • Donald's Nephews • Good Scouts • Donald's Golf Game • Donald's Lucky Day • The Hockey Champ • Donald's Cousin Gus • Sea Scouts • Donald's Penguin • The Autograph Hound • Officer Duck •
• The Riveter • Mr Duck Steps Out • Donald's Vacation • The Volunteer Worker • Fire Chief • Timber • Golden Eggs • A Good Time for a Dime • Early to Bed • Truant Officer Donald • Old Mac Donald Duck • Donald's Camera • Chef Donald • Donald's Decision • The Village Smithy • The New Spirit • Donald's Snow Fight • Donald Gets Drafted • Donald's Garden • Donald's Gold Mine • The Vanishing Private • Sky Trooper • Bellboy Donald • Der Fuehrer's Face • The Spirit of '43 • Donald's Tire Trouble • The Flying Jalopy • Fall Out Fall In • The Old Army Game • Home Defense • Trombone Trouble • Donald Duck and the Gorilla • Contrary Condor • Commando Duck • The Plastics Inventor • Donald's Off Day • The Clock Watcher • Donald's Crime • Duck Pimples • Cured Duck • Old Sequoia • Donald's Double Trouble • Wet Paint • Dumb Bell of the Yukon • Lighthouse Keeping • Straight Shooters • Sleepy Time Donald • Clown of the Jungle • Donald's Dilemma • Bootle Beetle • Wide Open Spaces • Chip an' Dale • Drip Drippy Donald • Daddy Duck • Donald's Dream Voice • The Trial of Donald Duck • Inferior Decorator • Soup's On • Three for Breakfast • Tea for Two Hundred • Donald's Happy Birthday • Sea Salts • Winter Storage • Honey Harvester • All in a Nutshell • The Greener Yard • Slide, Donald, Slide • Toy Tinkers •
• Lion Around • Crazy Over Daisy • Trailer Horn • Hook, Lion and Sinker • Bee at the Beach • Out on a Limb • Dude Duck • Corn Chips • Test Pilot Donald • Lucky Number • Out of Scale • Bee On Guard • Donald's Applecore • Let's Stick Togehter • Uncle Donald's Ants • Trick or Treat • Don's Fountain of Youth • The New Neighbor • Rugged Bear • Working for Peanuts • Canvas Back Duck • Spare the Rod • Donald's Diary • Dragon Around • Grin & Bear It • The Flying Squirrel • Grand Canyonscope • No Hunting • Bearly Asleep • Beezy Bear • Up a Tree • Chips Ahoy • How to Have an Accident in the Home • Donald in Mathmagic Land • How to Have an Accident at Work •
• Donald and the Wheel • The Litterbug • Donald's Fire Survival Plan • Family Planning •
• Donald's Failed Fourth • Donald's Shell Shots • Donald's Rocket Ruckus • Donald's Valentine Dollar • Donald On Ice • Donald's Dinner Date • Donald and the Big Nut • Donald's Grizzly Guest • Survival of the Woodchucks • computer.don • Donald's Halloween Scare • Donald's Lighthouse • Domesticated Donald • Whitewater Donald • Donald's Fish Fry • Bird Brained Donald • Donald's Pool • Donald's Charmed Date • Golf Nut Donald • Music Store Donald • Donald's Goofy World • Double Date Donald •
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