The M1915/16 officer's undress tunic, der kleine Rock,
was preferred by those officers who typically worked indoors,
especially staff officers. The double-breasted tunic sported a
turn-over collar, plain back vent, and
two rows of six plain domed gold or silver buttons (Bavarian tunic:
seven rows). The fabric was normally of superior quality doeskin or
The tunic's cut was similar to that of the M1903 double-breasted Litewka,
the officer's off-duty lounge jacket. The noticeable differences were
that the Litewka was lighter in shade and had straight-cut side
pockets, while the kleiner Rock was a darker feldgrau
with diagonal-cut side pockets.
In addition to the term der kleine Rock, one might
see this tunic referenced as kleiner Rock, or in a
phrase such as Offizier im kleinen Rock.