Hands Across the Border (1944)

In this musical Western, rival horse-breeders Jeff Adams (Joseph Crehan) and Brock Danvers (Onslow Stevens) are in a fierce competition over a lucrative government contract. But the hopes of the Adams family are dashed after Jeff dies while riding the tempestuous stallion Trigger. To the rescue, then, comes quintessential cowboy Roy Rogers (Roy Rogers), who saves the horse from vengeful slaughter and aims to train him in the hope of securing the contract on behalf of his departed friend.