Erikoisjoukot (1990)

From the back of the book (translated from Finnish):

Spetsialnoja Nazranie, Morskaja Pekhota, Vozdushnija Desanti, SAS, SEAL, U.S.Rangers, Special Service Force, Parachute Regiment, SBS, Mountain & Arctic Warfare Cadre RM, Green Berets, Delta Force, 82. All American, Gurkhas, Gebirgsjäger, Fallschirmjäger, 7. Luzcyka Dywizya Desantnova-Morska

These are only a part of the special forces included in this Twilight: 2000 sourcebook. And that is not all. It also includes complete character creation aid and background info on different special forces. The book also includes over 100 new illustrated weapons that the special forces use. Pistols range from the humble FN mk.1 to the elephant stopping Casull .454 magnum. If you have ever wondered what a Dum-Dum or a steel cap bullet does when it hits, your questions are answered in Erikoisjoukot -sourcebook.

As an extra, the weapons and vehicle data are also included in second edition format.