Warst Du an der Alten Försterei im Oktober 2001?
0-4 Frankfurt.
I tried to get in to the home end, but it was sold out, so I walked around to the away end, and got in, no trouble.
A very enjoyable afternoon. The atmosphere in the Frankfurt end was fantastic.
Nope, I was not at this specific game! It's funny how you mention the atmosphere, as our first and second relegation did wonders for us in terms of atmosphere.
Prior to our first relegation the atmosphere at Frankfurt was really bad like everywhere in Germany, but when we got relegated Ultras Frankfurt got formed in 1997 and adopted the Italian style of support. The hardcore fans moved from the official fan section "g block" to the roofed section right next to it and it was carnage.
It revitalised the whole fan scene back then as it felt like a new start. In terms of football the times were really bleak but in terms of support everyone was looking at what Frankfurt did. First they laughed and made fun of it and then we started with the first tifos, longer singing and all the choreographed stuff you lot love to hate! ;-) Shortly after the new style of support could be seen everywhere in Germany.
Union Fans are a really decent bunch by the way. Yes they can be a bit annoying with their "our way is the right way" attitude just like St. Pauli, but when we played there in 2012 (yes, relegated again....) we were not allowed to bring away fans.
But there were tons of Frankfurt fans going anyway and Union Fans helped us get tickets for the section next to the away end and Frankfurt fans went there incognito.
Not long until Union fans started to chant "let them over" and "the wall needs to go" ( both popular chants used during the fall of the Berlin wall). Then the security gave up, Frankfurt fans were breaking through the fences, climbing over them to get to the away action and a normal looking away section was restored. :-)
Followed by chants against the German football association by both sides.
I doubt that this sort of solidarity amongst rival fans is something you would see in England.