Northern pincer - Attack on the Rhine:
Deploy your best cav gen on the 2X guards cav and IF you have a 2nd best arty gen, deploy this gen on the 2X light arty.
Bring the Berlin troops to attack the northern tip of the Rhine's territory.
Ignore Oldenburg and spam cav from the lvl 1 stables to attack Frankfurt.
Attack Oldenburg with spawned light cav only when Frankfurt is attacked by sufficient troops. This helps to knock out Rhine and secure your northern rear entirely when you turn southward.
Southern pincer - Defending Saxony and invasion of Bavaria:
Deploy your best arty gen on the 2X heavy arty and IF you have an inf gen, deploy this gen on the 2X guards.
Move your troops towards the Danube and defeat the invaders in Saxony.
Work with Leiberich and the Austrians to attack Bavaria. Ignore nonessential enemies like the troops SE of Munich and the 2X guards cav on the stables to preserve HP.
Northern pincer - Attack on Frankfurt:
If the enemy took the lvl 1 city, recapture it. It can be used to spam militia to attack and defend Frankfurt.
Use your cav spam and starting troops to overwhelm Frankfurt.
Southern pincer - Expanding from Munich:
Take the factory SE of Munich to spam light arty against Stuttgart.
Use Munich to spam light inf, the best Prussian unit in this campaign to knock out the enemies surrounding Stuttgart.
L'Estocq should either attack the enemies south of Stuttgart or attack the siege arty. YOUR arty will bombard Stuttgart itself or the troops south of it if they cannot reach the city.
Northern pincer - Defence of Frankfurt:
Block the French gens from crossing as much as possible.
Spam light arty from the nearby factory to blast away at their HP.
Finish off Oldenburg if you have not done so and move your light cav spam to defend Frankfurt.
Remember to trade for resources to maximise resources and avoid attacking the enemy gens to ensure they can preserve as much HP as possible.
If your gens are dying, spam 3X line inf as they have the most HP.
If possible, flank and then surround the French gens. When surrounded, their battle capability is greatly lowered.
Watch out for additional French reinforcements!
Northern pincer - Go south:
If you manage to overcome the 2 French gens swiftly, turn southward.
Watch out for French reinforcements, Dutch invaders and Eugen's charge!
Taking Eugen's stables is key to attacking Stuttgart from the north.
Act fast and decisively before Moreau enters Stuttgart via Switzerland!
Having employed him for a long time, my Dumouriez is stronger than newly hired versions of him.
He also has a Snare Drum equipped so his output is consistently at his best, unless he is demoralised.