Rob Liefeld has posted a new blog post where he talks about a Deadpool miniseries written by Duane Swierczynski and drawn by him that was never published.
The story was set during my original X-Force era with Fabian Nicieza. The original X-Force line-up discovered that Deadpool had stolen a time machine and gone back in time to wreak havoc. The first issue found them in the Revolutionary War, the 2nd issue was the Civil War, the 3rd World War 1 and the last in World War 2.Liefeld goes into the details of the series and how it never came to completion due to contractual issue. Liefeld posted several pages of pencils from the series, as well as one colored page. [SOURCE]