Mobile Suit Gundam SEEDS1 E1

The Orb Union space colony, Heliopolis, is attacked by ZAFT, despite its neutrality since the beginning of the Bloody Valentine War. Kira Yamato accidentally sees the Earth Alliance's new prototype mobile suits, which have been secretly constructed at the Heliopolis Morgenroete factory. He encounters his childhood friend, Athrun Zala, now a ZAFT soldier as one of the attackers.