Akinji or akindji (Turkish: akıncı, IPA: [ɑkɯnˈdʒɯ]; literally, "raider", plural: akıncılar) were irregular light cavalry, scout divisions (deli) and advance troops of the Ottoman Empire's military. When the pre-existing Turkish ghazis were incorporated into the Ottoman Empire's military they became known as "akıncı." They were one of the first divisions to face the opposing military and were known for their prowess in battle. Unpaid they lived and operated as raiders on the frontiers of the Ottoman Empire, subsisting totally on plunder. There is a distinction made between "akıncı" and "deli" cavalry.
In battle their main role was to act as advance troops on the front lines and demoralise the marching opposing army by using guerrilla tactics, and to put them in a state of confusion and shock. They could be likened to a scythe in a wheat field. They would basically hit the enemy with arrows. When attacked in melee, they would retreat while still shooting backwards. They could easily outrun heavy cavalry because they were lightly armed and their horses were bred for speed as opposed to strength. Akinji forces carried swords, lances, shields and battle axes as well, so that in a field of combat, they could face the enemy first and fight melee. In some Ottoman campaigns, such as the Battle of Krbava field, Akinji forces were the only units utilized without any need for Ottoman heavy cavalry or infantry.
Because of their mobility akinji were also used for reconnaissance and as a vanguard force to terrorize the local population before the advance of the main Ottoman forces. Since they were irregular militia, they were not bound by peace treaties, so they could raid border villages and attack enemy garrisons, fortresses and border posts during peace time, constantly harassing the enemy and checking the weak spots on the rival country's defences. They would also attack trading routes to cut enemy's supply and transportation.