Drogichin, now in Belarus, is not to be confused with the town of similar name in Poland.

Drogichin is about 100 km (61 mi) east of Brest Map: Based on inter-war Wojskowy Instytut Geograficzny 300K scale maps, courtesy of mapywig.org

A small portion of a 1:100k scale 1930's Polish military map, courtesy of mapywig.org