Great movie, but the ending sucks

Rating: 8/10 (6 March 2020)

The whole movie was really brilliant. True face of war was shown to us, there is mug, death and blood everywhere, troops are frustrated and shocked.
But the ending... It seemed stupid even for a person who is not a military expert. Why did the tank crew allow Nazi to surround it? Why didn't they shoot them using heavy weapon while they were marching?
Overall, this movie is one of the best WWII movies, I'm just disappointed about the ending