Wild West (1946)

"Eddie Dean and His Horse Flash in Your All-Time Good-Time Melody Round-Up!"

Eddie and his sidekicks have been called in to help get a new telegraph line through. Dawson and his men along with his stooge Judge are out to stop them. When Eddie and the boys catch three of Dawson's men destroying telegraph equipment, the Judge releases them and this leads to the showdown between the two sides.