September 20, 1792 · Champagne, France Theater

Valmy was not a great battle by any conventional measure — casualties were minimal, the fighting lasted only hours, and the opposing armies barely closed. But it was one of the most consequential military engagements in history. The Duke of Brunswick's Prussian army — the finest professional force in Europe — advanced on the French position at Valmy and was met by a sustained artillery duel followed by something unprecedented: French citizen soldiers, raw recruits of the revolutionary army, chanting 'Vive la Nation!' and refusing to break. Brunswick, who had expected professional French soldiers to collapse under pressure and had never imagined they might hold on ideology alone, paused, reconsidered, and ordered a retreat. The road to Paris was open — and he chose not to take it.

November 6, 1792 · Austrian Netherlands (modern Belgium) Theater

A month after Valmy, Dumouriez's Army of the North met the Austrian defenders of the Low Countries at Jemappes in a pitched battle that demonstrated both the revolutionary army's ferocious attacking spirit and its contempt for tactical finesse. Outnumbered and inexperienced, the French attacked in dense columns that were devastated by Austrian fire — but kept coming. Revolutionary élan substituted for drill; the columns absorbed enormous casualties and kept advancing until the Austrian line broke. France had won its first offensive battle of the wars and conquered the Austrian Netherlands (modern Belgium) in a single engagement.

September – December 1793 · Mediterranean coast, France Theater

When the royalist city of Toulon invited British and Spanish forces to occupy it in August 1793, the Committee of Public Safety dispatched an army to retake the vital Mediterranean naval base. The siege stalled until a young Corsican artillery captain named Napoleon Bonaparte identified the key tactical problem: a British-held promontory called Fort l'Éguilette commanded the anchorage. If French artillery could take it, the fleet would have to leave or be destroyed. Napoleon directed the capture of the fort, the fleet departed, and Toulon fell within hours. He was promoted to Brigadier General at age 24.

June 26, 1794 · Austrian Netherlands (modern Belgium) Theater

At Fleurus, a French army of 75,000 defeated the Austro-Dutch coalition and permanently expelled Austria from the Netherlands. The battle is remembered for two military innovations: the first operational use of a military observation balloon (the 'l'Entreprenant,' which sent intelligence reports down to Jourdan's headquarters via signal during the battle) and the systematic application of Carnot's divisional system — multiple self-sufficient divisions striking simultaneously from different directions, impossible for a single commander to counter. The battle lasted 12 hours and included some of the most intense fighting of the early Revolutionary Wars.

November 15–17, 1796 · Venetian territory, Northern Italy Theater

The three-day Battle of Arcola was one of the most dramatic and personal engagements of Napoleon's Italian campaign. Attempting to relieve the besieged garrison of Mantua, the Austrian army under Alvintzy repeatedly crossed the Adige River seeking a passage around the French position. At the critical moment on the first day, the French assault on the Arcola bridge faltered under Austrian fire — and Napoleon himself seized a flag, rushed forward, and led the attack onto the bridge. He was knocked into the marshy riverbank. His staff dragged him out; two officers died covering his escape. Eventually French forces found an alternate crossing and flanked the Austrian position, winning the battle by maneuver rather than frontal assault.

January 14–15, 1797 · Lake Garda, Northern Italy Theater

Rivoli was Napoleon's masterpiece of the Italian campaign — and one of the greatest examples of interior lines in military history. Alvintzy advanced with 28,000 men in six separate columns through the mountains around Lake Garda, attempting to reach Mantua from multiple directions. Napoleon, with a central position and a smaller force, identified the main Austrian thrust at the Rivoli plateau and concentrated his entire army against it before the other Austrian columns could arrive. He destroyed Alvintzy's main body, then turned his army and defeated a second Austrian column that arrived behind him. A third Austrian column, arriving to find the battlefield lost, surrendered in its entirety. Mantua fell two weeks later.

August 1–2, 1798 · Aboukir Bay, Egypt Theater

Napoleon's Egyptian expedition — intended to threaten British India by controlling Egypt — arrived successfully and destroyed the Mamluk army at the Battle of the Pyramids. But Nelson had been hunting the French fleet for two months. At Aboukir Bay, he found it anchored in a defensive line, and executed an attack of devastating audacity: dividing his force to attack from both sides of the French line simultaneously, trapping French ships between two fires. The battle lasted through the night. French Admiral Brueys, mortally wounded, refused to leave his ship and was killed when it blew up — the explosion was heard forty miles away. Thirteen of seventeen French ships were captured or destroyed. Napoleon was stranded in Egypt.

July 25, 1799 · Aboukir Peninsula, Egypt Theater

The Ottoman Empire had landed 18,000 troops at Aboukir to reclaim Egypt. Napoleon attacked immediately — a classic offensive response to a threat that would only grow stronger if allowed to establish itself. The battle lasted a single day. Murat's cavalry charge drove the Ottoman forces off the peninsula and into the sea; the Turkish troops, caught between the French cavalry and the Mediterranean, had no choice but to drown or surrender. Mustafa Pasha was captured after being wounded. The victory was so complete — only 5,000 Ottoman troops escaped of 18,000 — that Napoleon considered it among his greatest.

September 25–26, 1799 · Switzerland Theater

In the most dramatic battle of the Second Coalition's Swiss campaign, General Masséna faced two separate allied armies — Korsakov's Russians near Zurich and Suvorov's Russians approaching through the Alps — that threatened to combine and overwhelm French forces. Masséna struck first: he crossed the Limmat River above Zurich in a pre-dawn assault, trapped Korsakov's force in the city, and destroyed it before Suvorov could arrive. Korsakov lost 8,000 men and 100 guns. Suvorov arrived days later to find Switzerland lost, fought his way out through the Alpine passes in appalling conditions, and withdrew Russia from the war. Tsar Paul I, furious with Austrian incompetence, withdrew Russia from the coalition.

June 14, 1800 · Piedmont, Northern Italy Theater

Marengo was nearly a catastrophic French defeat that became a legendary victory by the narrowest margin in military history. Napoleon had crossed the Alps with his army and positioned himself to cut Austrian communications — but the Austrian General Melas attacked first with overwhelming force. By early afternoon the French line had been shattered, Melas had sent dispatches announcing his victory, and Napoleon's position was near collapse. Then General Desaix arrived with a fresh division after a forced march, assessed the situation, and said: 'The battle is lost — but there is still time to win another.' He attacked. The Austrian army, celebrating victory and unwound from its march, was struck by a combined infantry-cavalry assault that shattered it completely. Desaix was killed in the charge that saved Napoleon.

December 3, 1800 · Bavaria, Germany Theater

While Napoleon fought at Marengo, General Moreau was methodically destroying the Austrian army in Germany. At Hohenlinden, fought in a snowstorm through dense Bavarian forest, Moreau executed a complex four-column encirclement that trapped Archduke John's Austrian army as it advanced along forest roads. The Austrian columns, separated by forest and snow, arrived at the battlefield piecemeal and were defeated in detail. Moreau captured 12,000 prisoners, 87 cannon, and 400 wagons in a single day. The road to Vienna was open; Austria signed the Treaty of Lunéville within two months.