There were approximately 25,000 members of the Army, the role of which was to invade southwestern Germany, precipitating the War of the Second Coalition.

The Army crossed the Rhine River on 1 March 1799 under the command of Jean-Baptiste Jourdan, in the order of battle below.

[4] After the defeat at Ostrach, the Army was reorganized and command shifted to another future marshal, André Masséna.

[7] Louis-Auguste Juvénal des Ursins d'Harville François Antoine Louis Bourcier The Advance Guard crossed the Rhine River at Kehl, and marched to the northeast.

François Joseph Lefebvre was indisposed—suffering from ringworm—and Jourdan had appointed General of Division Dominique Vandamme to direct the march.

[10] Within a week, part of the advance guard broke off from the main body and, under command of Vandamme, moved to Stuttgart, to investigate the rumored presence of Habsburg units.

[16] The division crossed the Rhine River at Hüningen near Basel, Switzerland, and marched in two columns eastward.

From Switzerland, Masséna sent a Demi-brigade of the Army of Helvetia to secure Schaffhausen, part of the Swiss cantons that lie north of the Rhine river.

From there, he was instructed to prevent any Austrian reinforcements from Switzerland joining with Archduke Charles, whom Jourdan expected to move across the Iller river near Augsburg, and advance into Swabia.

Division traveling through the Black Forest via Oberkirch, and the Reserve, with most of the artillery park, via the valleys at Freiburg im Breisgau, where the horses would find more forage, and then over the mountains past the Titisee to Löffingen and Hüfingen.

Division, which had run out of ammunition; when a cavalry charged failed to materialize, the Austrians acquired the upper hand.

[37] After the Stockach engagement, most of the Reserve withdrew to the west side of the Black Forest, where the horses could find forage,[24] but by late April, the Reserve had joined with the André Masséna's Army of Helvetia outside of Zürich; d'Hautpoul joined them in July after he was cleared by a Courts-martial in Strasbourg.