Dengeki Sentai Changeman

Dengeki Sentai Changeman is a Japanese television series. It is the 9th series in Toei's Super Sentai series. It aired from February 2, 1985 to February 22, 1986, running for 55 episodes, making in the second longest after "Himitsu Sentai Gorenger". It is the third Super Sentai series after "J.A.K.Q. Dengekitai" and "Battle Fever J" where the Yellow Ranger is absent, followed by 2013's "Zyuden Sentai Kyoryuger" and 2019's "Kishiryu Sentai Ryusoulger".
Plot.
After conquering hundreds of planets, the Star Clustere Gozma sets it sights on Earth. To defend it, the Japanese military forms an elite Earth Defense Force. Under Commander Ibuki, the force begins rigorous training.
Meanwhile, as their first act, the Gozma decide to eliminate those who pose the greatest risk of interfering with their invasion: the military. After a brutal day of training, the Earth Defense Force recruits are fed up with Ibuki's cruel ways and leave the training session. Soon afterwards, they are attacked by Gozma troops. Five surviving officers gather together, beaten and exhausted but refusing to retreat from the threat. The Earth trembles, empowering them with the Earth Force, giving them the power of mythological beasts and becoming the Changemen. With the mystical power of the Earth Force and military technology, the Changeman begin their war against Gozma.