Knowing a little about the ongoing Russian-Ukrainian war definitely helps in understanding the plot. The screenwriters admit they wanted to make sure all details including the conversations reflect the actual events since the movie is based on a true story. It is definitely one of the best non-fiction war movies I have ever seen.
By the way, there's a documentary called "The Ukrainians" that uses real war footage to depict the same battlefield.
By the way, there's a documentary called "The Ukrainians" that uses real war footage to depict the same battlefield.