Around 4 a.m. on March 21, 2003, U.S. soldiers and Marines crossed the border from Kuwait to Iraq, marking the start of a ground invasion that would reach Baghdad a little over two weeks later and ultimately destroy Saddam Hussein’s regime after 26 days of heavy fighting.
Two days later, U.S. troops began fighting a major battle in the southern Iraqi city of Nasiriyah, showing just how difficult the advance to Baghdad would be.
The U.S.-led military coalition that invaded Iraq had expected to face little resistance in…

