Thankyou for all of you guys' reply . But actually i can used riper's infantry mod on the old version of Emperor one time . But now i can't use it anymore . I put the newest infantry mod which made by alpha , I put that Rules.txt and Artini.txt ( downloaded from this site) into Model folder and it is in the Data directory . But i still can build all of the tanks . In riper's mod no tanks factory can be built , only that time suceed .