I believe the "German" Forces" were negible - probably less than 1000 men (not necessarily soldiers but mostly indigene Police forces for the whole Pacific region (except China)
New Guinea: 50 GErmans (2 Officers) + 240 Indigene Forces (Police)
Bismarck Archipel: 40 Germans (5 Officers) + 140 (110?) Indigene Forces (also police?)
Samoa: 40 German militia
Ponape 50 indigene Troops (Police)
Tsingtao - 1500 men if the III Marine Battailon + 3400 reinforcements later (+ a few men from the ships)