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Army of Darkness (1992) More at IMDbPro »

Universal wanted to market the film as a stand-alone feature for audiences who had not seen The Evil Dead or Evil Dead II which is also the reason for the prologue. The rights to the franchise had also changed hands, meaning the name "Evil Dead" could not be used anyway. Sam Raimi as a result used the subheading, "The Medieval Dead".

Linda died, after being possessed by the demons and later killed by Ash. Both Evil Dead films prior to Army of Darkness depict this.

Sam Raimi's third part of the Evil Dead trilogy was released both as a R-rated version and an unrated Director's Cut. The latter features more than 100 differences totaling in over 15 minutes of more running time. A detailed comparison between both versions with pictures can be found here.

He got them in Evil Dead 2 after he went head-first through the windshield of his car.

Interesting piece of trivia: the scar on the bottom right of his chin, which is slightly L-shaped is real. They put blood make-up on it in Evil Dead 2 to make it look as if he received it in the movie and retained it for this film.

In the original ending of 'Army of Darkness' Ash miscounts the number of drops of the sleeping potion he was supposed to take in the ancient times and wakes up in the ruins of a post-apocalyptic London, presumably far in the future. The studio thought this was too depressing so Sam Rami shot a new ending where we see Ash has returned to his job at the S-MART store in the present day but still has to battle the occasional deadite. Both endings are featured on the DVD version of the film. The obvious explanation is that they're both true, Ash triumphs over the deadites in the future and is then able to use magic to travel back to the present day, possibly being able to avert the future apocalypse occuring at all. He may not want to tell the story of his future adventures for fear of embarrassing himself.