Complex sentence: Large-scale conventional warfare in the Gaza Strip that began on June 28,2006, and its first major ground operation in the Gaza Strip since Israel's unilateral disengagement plan was implemented between August and September 2005.
Split into simpler sentences: Large-scale conventional warfare occurred in the Gaza Strip, starting on June 28,2006. This was the first major ground operation in the Gaza Strip since Israel's unilateral disengagement plan was implemented between August and September 2005.