Brave Command Dagwon is a Japanese anime series begun in 1996, created by Takara and Sunrise under the direction of Tomomi Mochizuki (who also did screenplay for the show) and was the seventh and penultimate entry in the Brave (Yūsha) franchise.
An alien detective comes to the earth and tells five high school students that evil Salgatz aliens are trying to conquer the planet. The detective gives them machines and power for them to change into five Dragons to fight against the Salgatz aliens. Now their fight against the Salgatz has begun.