In 1799, while Napoléon was about to return from Egypt, the French Republic armies had just been beaten almost everywhere. Gen. Moreau was beaton on the Danube, Shérer, Macdonald and Joubert were beaten by Suvorov in Italy. And the Army of Helvetia, led by Général Masséna was in between, in Switzerland and lost Zürich to Austria's Archduke Charles in the summer, but was still holding the mountain passes.

After beating Joubert at Novi, General Suvorov's armies was to cross the Alps and join the other Russian army, of General Korsakov who was relieving Charle's armies, to defeat Moreau and then drive into France.
Masséna decides to use Korsakov's dispersed order (divisions scattered to cover possible roads of access) and while Lecourbe's division has to hold Suvorov's army in the mountain passes of the St.Gotthard, while Soult's division crosses the Linth to hold Holts's division and while Ménard's division holds the town of Baden against part of Durasov's division, Masséna's army main body reaches the river Limmat on the 25th of September.

Historically, Masséna chose to cross the river near Dietikon, as the crossing was facilitated by lack of strong enemy forces and a suitable protective cover. While half his army victoriously crossed the Limmat and drove to Zürich on the North bank of the river, the other half marched to Zürich from the south banks of the Limmat to fix Korsakov's main force.

Korsakov and Masséna's armies fought a hard battle on the 25th and Korsakov had to leave the ground, defeated. That allowed French forces to regroup and to be put under the command of Général Napoléon Bonaparte who landed after his Egyptian campaign and who would lead the victorious campaign of 1800.

In this scenario, I had to twist a bit the TOE to make up for the scale. I added some guns with range to the artillery units to allow a 1'500 meter range of fire. I chose one-day turns to simulate the 2-hour walking distance (and avoind the half-day turns that brought the nuisance of night turns) and so had to add wagons, etc. to slow units movement down.

There is a theater option for the French player to call bacl Ménard's division. This will have the effect to also bring back the full Durasov division