Phil works at cleaning in a dinosaur museum, and has nightmares of being chased by one. Luckily the war comes along... but now his buddies are suffering the same nightmare. Towed by a glider, they fly through a cloud and crash on Dinosaur Island. They fight dinosaurs with grenades and a 155mm howitzer until a dinosaur wrecks it. "Maybe this is a dream." Snatched by a pterodactyl, they shoot it to drop through the cloud -- and splash next to a destroyer. Still, that night in sick bay, the nightmares are back...
In the Pacific, the skipper is convinced his bomber is an island in the sky. Bombs are earthquakes, Zeroes are sharks, .50 caliber fire are fishing lines. Then they're hit and the plane ends up floating, like a real island. They fight until ammo runs out and ram a Japanese sub. "You've convinced us, Skipper!"
"Peanuts" Potter comes in last for everything, especially as a jockey. The Army takes him, but he's last at riflery, hikes, and PT. Only good for carrying ammo, he gets lost in a forest and captured by Nazis. They order him to use a former racehorse to carry ammo. Peanuts and "Champ" kick free. Riding hard, Peanuts brings down a tank and a plane. "You'll be the only guy who'll get a medal for coming in late!" Peanuts and Champ: "That goes double!"