Complex sentence: Al-Taji airfield, a base in the volitile sunni triangle was originally an Republican guard base during the "Sadam era" and a center for chemical weapons manufacture it was also the largest tank maintainance facility in Iraq.
Split into simpler sentences: Al-Taji airfield, a base in the volitile Sunni triangle was originally an Republican guard base during the "Saddam Era" and a center for chemical weapons manufacturing. Taji was also the largest tank maintainance facility in Iraq.