As noted above, the fierce charge of the Gauls and their individual prowess is frequently acknowledged by several ancient Roman writers. The Battle of Gergovia however demonstrates that the Gallic were capable of a level of strategic insight and operation beyond merely mustering warriors for an open field clash. Under their war leader Vercingetorix, the Gallic pursued what some modern historians have termed a "persisting" or "logistics strategy" - a mobile approach relying not on direct open field clashes, but avoidance of major battle, "scorched earth" denial of resources, and the isolation and piecemeal destruction of Roman detachments and smaller unit groupings. When implemented consistently, this strategy saw some success against Roman operations. According to Caesar himself, during the siege of the town of Bourges, the lurking warbands of Gauls were: