Hi, I assume we are talking "Battalion" ? I think a glance at most Pionier battalions will show them to be "a bureaucratic "home" " for the units of the battalion. Usually you have the companies of the battalion spread over a bunch of divisionsand the Batln. itself as a ghost admin office, so I dont see what is so ominous with the 32nd? My reference to the battalion shows simply where the companies that served on Divisional level were on a certain date in 1918, not where they were before and not parts attached to higher formations. many pionier formations are elusive, unless there is something a bit more concrete to prove otherwise, I would guess it was simply a unit in a Armeekorps supporting the Bulgarians or something along those lines as supposed to a secret unit. Best Chris