What is a question about this article? If the question is unanswerable, say "unanswerable".

At the same time, some Alsatians were in opposition to the Jacobins and sympathetic to the invading forces of Austria and Prussia who sought to crush the nascent revolutionary republic. Many of the residents of the Sundgau made "pilgrimages" to places like Mariastein Abbey, near Basel, in Switzerland, for baptisms and weddings. When the French Revolutionary Army of the Rhine was victorious, tens of thousands fled east before it. When they were later permitted to return (in some cases not until 1799), it was often to find that their lands and homes had been confiscated. These conditions led to emigration by hundreds of families to newly vacant lands in the Russian Empire in 1803–4 and again in 1808. A poignant retelling of this event based on what Goethe had personally witnessed can be found in his long poem Hermann and Dorothea.

Where did the Austrian and Prussian armies make pilgrimages to?
unanswerable