Battle of the Frontiers (Morice Line)

The Battle of the Frontiers pitted the French army against several thousand ALN fighters attempting to cross the Morice Line, a network of barbed wire and minefields separating Tunisia from Algeria. The clashes were of rare intensity: night attacks, wave assaults, artillery harassment, and air strikes. The French managed to contain most of the infiltration attempts, inflicting heavy losses on the ALN, but without preventing the continuation of the guerrilla war.

In 1958, independent Tunisia served as a rear base for the FLN. To prevent infiltration by the maquis, France built the Morice Line: a system of electrified fences, minefields, and fortified posts. The ALN attempted a massive breakthrough in the spring to establish bridgeheads in Algeria and supply the interior maquis. The battle, widely covered by the media, was seen as a test of French military superiority.

The FLN launched coordinated attacks against French posts, used camouflage and rugged terrain, and attempted night crossings. The French army deployed considerable resources: motorized patrols, fighter and bomber aviation, artillery barrages, crossfire barriers. Paratroopers conducted local counterattacks and encircled infiltrating groups.

The French victory delayed the FLN's major offensives, but at the cost of a massive commitment of resources and heavy losses. The conflict became internationalized, Tunisia protested against French incursions, and FLN propaganda strengthened. The Morice Line, though formidable, could not prevent the guerrillas from adapting, nor the political attrition of France. This battle accelerated the realization of a military impasse and preparation for negotiations.