(5) during the war of 1812, he won a government contract. (6) he was to supply beef to u. s. soldiers.

which is the most effective way to combine sentences (5) and (6)?

1. during the war of 1812, he won a government contract to supply beef to u. s. soldiers.
2. during the war of 1812, to supply beef to u. s. soldiers was what he won a government contract for.
3.during the war of 1812, he won a government contract he was to supply beef to u. s. soldiers.