The son of a small notary of St. Amand, a little-known town in the department of the Tarn, Soult was possessed of all the fervour of the South and the cunning and tenacity of a Gascon. Born on March 29, 1769, he early distinguished himself by his precocity and his quickness of perception. Although handicapped by a club-foot he determined to be a soldier, and at the age of sixteen he enlisted in the Royal Infantry regiment.
His intelligence marked him out for the rank of sergeant, and in 1791 he was sent as sub-lieutenant and drill instructor to a battalion of volunteers of the Haut Rhin. In spite of his lameness and his slight frame, the young sub-lieutenant was possessed of a physique capable of withstanding the greatest fatigue and hardship, and spurred on by ambition, he never shirked a task which might add to his reputation. Consequently, he was soon chosen captain by his comrades, and once war broke out he speedily rose. At the battle of Kaiserslautern, the storm of the lines of Weissenburg and the siege of Fort Louis, he forced himself to the front by his gallantry and his rapid coup d'œil.
But it was the battle of Fleurus which once and for all established his reputation. Soult was by then colonel and chief of the staff to General Lefèbvre. The gallant Marceau's battalions were hurled back in rout by the enemy, and their chief in agony rushed up to Lefèbvre crying out for four battalions of the reserve that he might regain the ground he had lost. "Give them to me," he exclaimed, "or I will blow out my brains." Soult quietly observed that he would thereby only the more endanger his troops. Marceau, indignant at being rebuked by a young staff officer, roughly asked, "And who are you?" "Whoever I am," replied Soult, "I am calm, which you are not: do not kill yourself, but lead your men to the charge and you shall have the four battalions as soon as we can spare them."
Scarcely had he uttered these words than the Austrians fell with fury on Lefèbvre's division. For hours the issue hung in the balance, and at last even the stubborn Lefèbvre began to think of retreat. But Soult, calmly casting a rapid glance over the field, called out, "If I am not mistaken from what I judge of the enemy's second line, the Austrians are preparing to retreat." A few moments later came the order to advance from Jourdan, the commander-in-chief, and thanks to Soult's soundness of judgment, the divisions of Marceau and Lefèbvre were charging the enemy instead of fighting a rear-guard action to cover a rout. After the battle, the generous Marceau sought out Soult. "Colonel," said he, "forgive the past: you have this day given me a lesson I shall never forget. It is you in fact who have gained the battle." Soult had not long to wait for his reward, for in 1794 he was promoted general of brigade.