The soldiers are military henchmen for the government in the Mmovie Laputa: Castle in the Sky.
Under the command of General Muoro and Colonel Muska, the army pursued Sheeta after she escaped from Muska at the beginning of the film. The army eventually recaptured her along with Pazu and brought both children to the fortress at Tedis. Once Muska discovers the way to Laputa, the army travels to the flying island aboard the Air Destroyer Goliath. There on Laputa, Muska betrays Muoro and causes the general and the rest of the army to fall to their deaths in the ocean below.