Jednotka is a term that translates to "unit" in English and can refer to various contexts, including measurement, military, or organizational structures. In the context of measurement, it denotes a standard quantity used to express physical properties, such as length, mass, or time. In military terms, Jednotka often refers to a specific group or formation, such as a battalion or squad. These units are organized for operational purposes and can vary in size and function, depending on the mission and the military structure of a country.