In 1988, Condor in Germany started publishing a wonderful set of Captain America volumes, ending at #26. These were titled Taschenbuch's and were digest-sized. Each volume was quite thick and unequally split between several Captain America stories and a couple of Iron Man (Der Eiserne) stories. I've also included Captain America Comics #1 (Gold Stamp Edition), published by Marvel Deutschland in ‘99 in celebration of 60 years of Cap.
Foreign Comic Collector Magazine: Captain America Taschenbuch's
Foreign Comic Collector Magazine: Captain America Comics #1 (German 60th Ann. Gold Foil Edition)