In 88 the Fourth participated to the retaliation invasion of Dacia; it also participated in the Dacian Wars of Trajan, ending with the victory at the Battle of Tapae.
In 88 the Fourth participated to the retaliation invasion of Dacia (see Domitian's Dacian War). It also participated in the Dacian Wars of Trajan, being victorious at the Second Battle of Tapae.