I found thishttp://www.bunkergordel.be/3-0-Het%20Belgische%20leger.htm
it's in Dutch but it's quite obvious what it means. Note that I cannot account for the veracity of the list.
kanonnen 7.5cm snelladers uit 1907
kanonnen 7.5cm veldgeschut
kanonnen 105mm uit 1913
Getrokken kanonnen 120mm
Franse Obussen 155mm*
Britse 6 ponders*
220mm mortieren uit 1916
6 kanonnen 170m (I'm pretty sure they forgot to add an "m" there ^^)
5 kanonnen 280 mm
1 kanon 304 mm waarbij ons leger slechts de beschikking had over 124 bruikbare obussen
380 mm spoorwegkanonnen
FRC 4.7cm kanonnen
Houwitsers Bofors 75 mm
One last thing, the majority of "Belgians" speak Dutch. So unless your article must be in French, I think you should put the names in English or Dutch.
*: it's not clear whether these were lend to (or bought by) the "Belgian" forces during WWI or whether they were used solely by foreign troops. I guess it's the former.
An unavoidable war is called justice.
When brutality is the only option left,
it is holy.
Machiavelli - The Prince 1513.
I'm not American, I'm from Flanders.