The subject of this paper is the development of infantry throughout history. It deals with the development of infantry tactics, equipment and armaments over 4 periods: infantry dominance period, infantry stagnation period, infantry revival and modern infantry. Throughout the first period, we will get to know the armies of the ancient world: the ancient people of Mesopotamia, the Greeks and the Romans. This is followed by the Middle Ages and the period of stagnation of infantry equipment and tactics. This is a period dominated by horsemen and armies of feudal lords. The rebirth of infantry begins with the strengthening of the mercenaries in Europe, and continues with the emergence of firearms and regular armies. Napoleonic wars can be seen as a kind of announcement of modern infantry. The Contemporary Infantry Chapter provides an overview of the great world wars of the first half of the 20th century and the further development of weapons and equipment after the end of the aforementioned, to this day.