Battle of Guise (Saint-Quentin)
Summary
After the harsh defeat at Charleroi and general retreat, General Lanrezac's 5th Army received the unexpected order to turn and attack the German right wing to relieve pressure on British troops and buy time for Allied reorganization. From 29 to 30 August, battle engaged around Guise and Saint-Quentin. French divisions, supported by powerful artillery, surprised General von Bülow's forces, who did not expect a counteroffensive. Combat was fierce, especially around the Oise, villages of Guise, Saint-Quentin, Ribemont, and Proix, with violent bayonet charges, street fighting, and intense artillery duels. The French counteroffensive, initially victorious, forced Germans to withdraw locally and allowed Allies to continue their orderly retreat.
Historical context
The Battle of Guise took place in the critical context of the 'Great Retreat': after frontier defeats, the entire French army retreated in disorder toward the Marne. Commander-in-chief Joffre, fearing front dislocation, ordered Lanrezac to take offensive action against von Bülow's army to prevent collapse of the BEF (British) on his left. Lanrezac, though exhausted, energetically organized attack on a widened front, exploiting surprise and local artillery superiority.
Tactics
French troops crossed the Oise River under enemy fire, then deployed in depth to strike weak points of the German deployment. Attacks were conducted in infantry waves, supported by artillery batteries and famous 75 mm guns renowned for their rate of fire. Village combat was marked by fierce hand-to-hand fighting. Germans, caught off guard, attempted to reorganize their lines and counterattack but suffered heavy losses. The German withdrawal order on 30 August allowed the French 5th Army to clear the southern route.
Consequences
The victory at Guise was tactical but crucial: it slowed the German advance, saved the Allied left, and allowed orderly retreat. It had a decisive psychological impact, restoring confidence to French staff and destabilizing German aggressiveness. Strategically, Guise prepared the decisive Battle of the Marne by delaying the pivot of the German right wing and weakening its reserves. Lanrezac's reputation was rehabilitated, though his relations with Joffre remained tense. For Germany, it was a first warning about difficulties of mobile war against determined resistance.