Complex sentence: HQ Battery from Treasure Island, CA, A "Battery from Spokane, WA, and" B' Battery from Pico Rivera, CA mobilized to Camp Lejeune, NC and the Battalion was sent to Norway in support of Exercise Battle Griffith.
Split into simpler sentences: HQ Battery from Treasure Island, CA, A "Battery from Spokane, WA" B' Battery from Pico Rivera, CA. Mobilization station was Camp Lejeune, NC and the unit was sent to Norway in support of Exercise Battle Griffith.