For the rest...Mirko and Slavko were strip heroes in ex-YU. Two young boys fighting against the Nazi. They had some legendary exchanges, as the one on the above pictures, which says:
Picture 1:
Slavko Says: Mirko, watch out, a bullet!
Picture 2:
Mirko sees the bullet and jumps to escape from it
Picture 3:
Mirko says: Thanks Slavko, you saved my life.