Complex sentence: The 1st Armored Division--nicknamed "Old Ironsides"--is a division of the United States Army, part of III Corps, with its base of operations in Fort Bliss in El Paso, Texas.
Split into simpler sentences: The 1st Armored Division--nicknamed "Old Ironsides"--is an armored division of the United States Army. The division is part of III Corps, with its base of operations in Fort Bliss in El Paso, Texas.