Continuity mistake: The scene where Crapgame is telling Oddball about Kelly being a former officer, Oddball is holding a gold bar in his hand. The front shot of Oddball has him holding the bar at a low angle with the tapered top of the bar facing upward, while the shots over Oddball's left shoulder shows him holding it higher with the wider base of the bar facing upwards, instead. (00:37:20)
Continuity mistake: The Tiger tank blows a hole in the bank door, so the team can gain access. A check made previously for another entrance was obviously not successful since it was necessary to blow the hole with the tank. Kelly et. Al enter through the hole but immediately are joined by others from some unexplained side entrance.
Factual error: 14000 bars of gold would be hundreds of tonnes, more than the capacity of the one truck. A standard gold ingot weighs 12.4 kilograms. 14000 would weigh 173.6 tonnes. Even if they divided the haul evenly between Kelly, Oddball and the Germans they would be hauling away just under 58 tonnes of gold each, way, way beyond the capacity of anything on the roads in those days.
Revealing mistake: When Kelly is using the gold bars to persuade the others, he hands them over. There is obviously no weight as e.g. Crapgame's hand doesn't drop when taking it. (00:28:40)
Continuity mistake: At the train station, just as the 3 Shermans turn to face behind the tunnel to fire at the building, they suddenly move a lot closer together. (01:02:40)
Continuity mistake: When Oddball is shooting up the rail yard, he aims at a building with the signs "Saint Server" and "2" on the outside of the buildings. In the first shot, the "2" is damaged at the bottom. In the second shot, just as it explodes the "2" is back to normal. Note the baseline. (01:01:50)
Continuity mistake: When the squad is crossing the cleared cornfield and encounters mines, each individual is forced to meticulously check with his knife and crawl individually to where he could follow Kelly's path. The cornfield surface all around is uniformly chewed up with moist dirt and lots of plant debris. However, when the German patrol shows up, the remaining soldiers escape along a well-worn, tamped path and the surrounding field looks dried out, smoother, and with much less plant debris. (01:12:00)
Continuity mistake: When Crapgame makes a phone call after speaking to Oddball, his grip on the receiver changes between shots. (00:37:40)
Continuity mistake: When Joe is talking to the Captain about having a guide for the town, the Captain's chin strap on his helmet is twisted or untwisted depending on the shot. (00:12:30)
Answer: It's a Yugoslav Soko 522 Ikarus.