Poland’s 120,000 person volunteer army
Back when WWI kicked off, Poland didn’t exist. Partitioned by Germany, Austria and Russia in the 18th Century, there were Poles in the respective army of each. However, there were also the Polish Rifle Squads (Polskie Drużyny Strzeleckie, PDS) and Riflemen’s Association (Związek Strzelecki “Strzelec,”) paramilitary civil groups roughly comparable to the DCM clubs and airsoft groups in the U.S. today.
However these groups later proved pivotal to Polish independence in 1919 and formed the basis of the new Polish Army.
Revived in 1991, they are now stronger than ever as seen in the Vice Germany episode above.