Strategemata, also known as Stratagems, is a work by the Roman author Frontinus who lived at the beginning of our era. Strategemata is a collection of examples of military stratagems from Greek and Roman history. This work was created as a manual for the use of generals. It is split in four chapters dealing with the preparation of battle, fighting a pitched battle, siege and general statements of war. He gives tips and tricks which allowed generals of the past win the battles. That includes poisoning water, capturing a flag as a discouragement, or rejecting a group of soldiers back to camp unless they bring a victory. Despite, some of the tactics showcase the cruelty, in general, the principles of the ancient battles possess timeless value and can be of great use for everyone interested in the military tactics.