MACHINE GUN UNITS
The kanji for Machine Gun Unit are above. It is difficult to tell
whether a cup belonged to a member of a Machine Gun Unit
because sometimes these gun designs were used generically.
However, machine gun units were included in different regiments,
and sometimes this specialization wasn't noted on cups.

And once in a while you will only see the kanji, no machine gun
picture.
A bit hard to read--handwritten in a leisurely
script. Read from right to
left:KI-KAN-TO-TAI. Sometimes you will see
just the first character (KI), usually
following the regiment number.
This one reads, from left to right, KI-KAN-TO-HAN. The last
character, HAN, means group or unit. The other two
examples I've included use a different kanji at the end. (TAI
meaning regiment)
This one reads, from left to right, KI-KAN.

Inscribed '33rd Infantry, Discharge Commemorative.'

Inscribed '33rd Infantry, Discharge Commemorative.'

Inscribed '32nd Infantry, Discharge Commemorative.'

Inscribed '33rd Infantry, Discharge Commemorative.'
Inscribed 'Discharge Commemorative, 68th Infantry Machine Gun Unit'.
Inscribed 'Light Machine Gun Unit, 33rd Infantry,
Discharge Commemorative'.
Machine gun cup with bold design.

Inscribed '25th Infantry, Machine Gun Unit, Discharge Commemorative'.
Inscribed 'Light Machine Gun Unit, 10th Infantry,
Discharge Commemorative'.

Inscribed 'Shanghai Dispatch,
Victorious Return Commemorative'.

Inscribed 'Shantung Dispatch, Commemorative'.
Interesting design. Kutani kiln.
Inscribed '7th Infantry, Machine Gun Unit, Kishi.'
Inscribed 'Machine Gun Unit, 41st Infantry, Discharge
Commemorative'.
The barrel of this MG looks like a cannon.
Inscribed '6th Infantry, North Manchuria Dispatch, Victorious Return
Commemorative.'
Inscribed 'Discharge Commemorative, 30th Infantry, Hajima.'
Inscribed 'Machine Gun Unit, 23rd Cavalry, Yazawa, Commemorative.'
Inscribed 'Discharge Commemorative.'
Sake bottle with a machine gun, which is a bit uncommon.
Inscribed '13th Infantry Machine Gun Unit, Discharge Commemorative,
Higashi.'
Although it is difficult to see in the photos, the bottle is a pale green color.
Interesting design. Below the flags is a horse and four vertical lines.
The meaning of the latter is unclear. In addition, the right flag has no
design. I held it to the light but I cannot find any traces of fading. This
could be meant to be a tattered regiment flag.
Inscribed '7th Infantry, Machine Gun Unit, Discharge Commemorative.'
Inscribed '37th Infantry, Discharge Commemorative.'
Detailed machine gun with ammo box.
Inscribed 'Commemorative, 26th Infantry, [Fujino?].'