Axel Julius was the son of military commander Jacob De la Gardie and Ebba Brahe.[1] He became colonel of an infantry regiment and the Västgöta cavalry regiment[5] and in 1664 he attained the rank of major general in the cavalry, and was a colonel in the Royal Guard.[4] In 1668 he became lieutenant general and later field marshal.[6]
Upon the threat of war with Russia, he received orders to command the troops in Finland and Ingria and take necessary defensive actions. At the landtag he held in 1676 in Åbo, the government granted the request of new war efforts.