When they were little, Erwin was the shy, quiet one (as he was in reality) and Pfirsich was the confident brat.  They swapped at puberty.

However, sometimes it’s just too much.  Pfirsich hasn’t been in the military long, and sometimes he just has to kick over the traces.

Everybody smoked back then.  Men, women, kids, outside buildings and inside.  Considering the history of the 20th century, how else could they have gotten through it?