Great question — answering as the UphillTech team:
To capitalize on the success of its predecessor. Even IMDb said the same in their trivia section: The movie is being released on November 13th, 2018 to capitalize on the release of 'Overlord', which premieres on November the 9th. The same applied to Operation Dunkirk (2017) too. And this is not a new thing, there is a category of such movies called Mockbuster . A mockbuster is a movie created with the intention of exploiting the publicity of another major motion picture with a similar title and/or subject. Mockbusters are often made with a low budget and quick production to maximize profit.
Full answer by Ankit Sharma: https://movies.stackexchange.com/a/93989 (CC BY-SA 4.0).
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