Continuity mistake: When the General comes into the room for his surprise party the old lady and the granddaughter step back when he first enters then the camera cuts to another angle and they step back again.
Continuity mistake: The two sisters are in their room backstage. One sister is holding a coffee pot and pours a cup of coffee, and then puts the coffee pot down. The camera cuts away and cuts back and now she is holding the coffee pot again.
Continuity mistake: Near the beginning during the war when the two actors are in the tent - they are sitting on a cot talking - they are next to each - then not - then next to each other in same scene.
Continuity mistake: When they are at the table in the train's dining car, there is a large menu against the window. The menu is horizontal. When they start singing, the menu is suddenly vertical.
Character mistake: When Wallace and Davis start performing together, they show the newspaper Variety with 5 different headlines. 3 of those papers have the same story "Old Trooper Dies."
Continuity mistake: During the morning outside following the buttermilk scene in the inn where "Counting My Blessings" was sung, Bob arrives in a jeep to talk to the general. Bob shows him a hand bill for the upcoming show, which has a reddish top trim. He sits down with the hand bill on his leg in order to light a match for the general's cigarette. The hand bill falls to the ground. However, in the next shot, the hand bill is in Bob's right outside coat pocket with other papers (he may have done that after the previous shot to keep it from falling to the ground but it wasn't caught).
Continuity mistake: Opening scene, on the stage where Bing is singing next to the tree. There is no bench. Danny Kaye picks up the music-box he's been cranking to get it out of the way of the soldiers... And suddenly he has a bench to put it on.
Factual error: While travelling up the east coast from FL to ME they show a Santa Fe passenger train, which only runs out west.
Continuity mistake: During the General's birthday scene, the camera follows him into the room, the candles on the cake are lit. Angle changes to the left, as he continues to walk, the candles are out. Back to behind, the candles are lit again.
Continuity mistake: Watch Mary Wickes button-down blouse during the scene when she eavesdrops on Bing Crosby's phone call. There is one short sequence where one button has come undone. The rest of the time, all buttons are fastened securely.
Continuity mistake: On the train scene in the dinner, watch the table. Every camera angle change, the salt & pepper shaker, the ashtray, the flower, everything, jumps around on the table...
Continuity mistake: There's a mysterious moving pitcher of buttermilk and a tray of sandwiches in one of Bing's scenes in the Inn.