The War of the flags (also known as Landgrab '73) was a phase of fighting throughout South Vietnam lasting from 23 January to 3 February 1973 as the forces of North and South Vietnam each sought to maximize the territory under their control before the ceasefire in place agreed by the Paris Peace Accords came into effect on 27 January 1973. The fighting continued past the ceasefire date and into early February. South Vietnamese forces made greater territorial gains and inflicted significant losses on the North Vietnamese forces.