The word although is like since and if, not like therefore and however.
The word although is a subordinate conjunction, not a conjunctive adverb.
The word although does not take a semicolon before it and a comma after it.
...saw them; although, they were... :-(
...win it; although, the team did not... :-(
...We still saw them although they were fairly well hidden. :-)
...They did win it although the team did not play well. :-)
Happy punctuating!
Margie