When impersonating the German General, Carter still has the big mole on his right cheek. This should have been a dead give-away.
When Hogan wants the bomb set on the tracks, he wants the train delayed 3 hours, NOT a delayed fuse of 3 hours.
When Hogan is in the cooler making plans with LeBeau, Newkirk and Carter he tells Carter "tell Kinch to go out and set a time bomb on the tracks and have it delayed for 3 hours" - this part of Hogan's plan is a dead end and is never followed through. The rest of his plans are followed. This bit of dialogue is left dangling story wise.
Update: There is no 'dangling' bit of dialogue that is a dead end. Hogan knew the train was scheduled to leave in the morning. When Hogan and Newkirk tried to get the documents from the briefcase during the night, they were caught, and Hogan and Newkirk were put in the cooler. Hogan wants Kinchloe to place a time bomb on the tracks to delay the train for 3 hours. The purpose of delaying the train for 3 hours was to allow time for Carter to dress up as General Reifschneider and recruit the rest of the gang for a suicide mission to the Russian front. The train that is being delayed is the means of traveling to the Russian front. Not showing Kinchloe planting the bomb and delaying the train is irrelevant - the fact is, the train was delayed, and Hogan and the gang were on the train.
Update: There is no 'dangling' bit of dialogue that is a dead end. Hogan knew the train was scheduled to leave in the morning. When Hogan and Newkirk tried to get the documents from the briefcase during the night, they were caught, and Hogan and Newkirk were put in the cooler. Hogan wants Kinchloe to place a time bomb on the tracks to delay the train for 3 hours. The purpose of delaying the train for 3 hours was to allow time for Carter to dress up as General Reifschneider and recruit the rest of the gang for a suicide mission to the Russian front. The train that is being delayed is the means of traveling to the Russian front. Not showing Kinchloe planting the bomb and delaying the train is irrelevant - the fact is, the train was delayed, and Hogan and the gang were on the train.
In one scene where Hogan and Klink are in a room on the train, the scene out the window is not changing or moving, but the sounds of the train indicate it has started chugging in reverse.
LeBeau is seen talking to Hogan in a room in a passenger car and hugging Marya in the car hallway. Shortly later, he is seen in the booth of the engine, trying to stop the train. It was not stated how he got there, and got there in so short of a time. There is a pile of coal in the tender between the passenger cars and the engine that he would have to climb over, yet he is not dirty.