In the past, Nijemci were a very important economic, cultural, but also administrative center. Historical monuments and archeological finds reveal that a settlement existed here in Roman times and even earlier.
The name of the village probably immediately associates with the Germans, the nationality of the citizens of the Federal Republic of Germany, which is a coincidence. The first written evidence appears in the 15th century, namely the names Nempthy and Nemethy, and later Nemci and Nijemci. For the local population in the last hundred years it is called Nimci and Nimce. There is also a legend about a mute shipowner (scaffolder) who transported people and goods through Bosut, so allegedly the village was named after that “nimak”.
There are also extremely interesting archeological sites that fuel the imagination of the curious. In the central park in the center of the village, just a meter below the surface, there is a tangle of walls and cavities. With a brief insight, this site is defined as a Turkish bath. Also, Nijemci are intersected by trenches and tunnels that are visible from the surface as well. Before the Turkish conquests, in the middle of the 15th century, Nijemci were mentioned as a place inhabited by peasants who were engaged in peasant activities, but also as an important trade and craft center. Nijemci fell under Turkish rule in 1529, under which they remained for the next 150 years. South of Nijemci, in the direction of the Sava River, there were swampy forest areas into which the inhabitants of the surrounding settlements took refuge during the raids of Turkish troops. Forests still exist within almost the same boundaries as then, but the swamp is no more.
According to 17th-century church records, it is clear that Nijemci were a spiritual center at the time.
The expulsion of the Turks changed the significance and role of Nijemci, so in the new state, the Austrian monarchy, a Military Frontier was formed in this area, so Nijemci and the surrounding settlements fell under Military Border (Krajina) rule, which was turned to the central government in Vienna.