Today in 1706 this battle was fought. This film from the Armemuseum is well worth watching if you don't speak Swedish - there's some pleasing reconstructions and some self-explanatory graphics. Part 2 here.
These Saxon-Polish redcoats look pretty smart - I don't suppose anyone reenacts troops from this nation in this period?
Anyway it's probably best to read the wiki on the battle then watch the programme.