When Gunar (Dolph Lundgren) shoots the recoilless rifle at the enemy camp he says: "Spring, era jävlar!" which is Swedish for: "Run, you bastards!". This exclamation has become a cult classic line in Sweden.
In the beginning of the movie, Warren is offered a sip of a hip flask, and chokes, wondering where the contents come from. Nick Gunar answers that it comes from Sweden, like him, an often repeated line. In a later scene, there is a passing glimpse of a bottle of OP Andersson aquavit, with its very distinctive label. As this Akvavit is from Sweden, it's likely that this is what is in the hip flask, particularly as it is something of an acquired taste.
In the very beginning of the movie, Dolph Lundgren's character Nick Gunar 'bakes' a ball of Swedish snus, and pops it in his mouth. Interestingly, he puts it under his lower lip, which is rather uncommon, with the vast majority of users putting it under the upper lip.
John Sayles script remained in the final movie although it had rewrites by Ethan Reiff and Cyrus Voris. The major difference though is that Sayle's original script only had action in the last act, but once the film was about to be made (about 6 years years after it was written) with Dolph Lundgren, a requirement from the producers was to put action throughout.
Originally set up at Atlantic Entertainment, under the title "A Safe Place". The screenplay by John Sayles was more of a drama than action/thriller. After Atlantic went bust in the late 80's, the screenplay languished for years.