To some extent. While not a completely accurate account, 'The Dirty Dozen' incorporates elements of truth from historical military scenarios and individuals.
Well, it has roots in real war scenarios, but it's more of a fictionalized account that incorporates true elements to build an exciting story for the screen.
The basis of 'Dirty Dozen' has roots in truth. However, it's not a verbatim retelling. The story was adapted and embellished to create a compelling narrative on the big screen.