The start of the Iraq War 20 years later in photos

March 20, 2003: U.S. Marines prepare themselves after receiving orders to cross the Iraqi border at Camp Shoup, in northern Kuwait. / AFP via Getty Images

March 21, 2003: Fires burn in and around Saddam Hussein's Council of Ministers in Baghdad, Iraq, during a wave of attacks in the "shock and awe" phase of "Operation Iraqi Freedom." / Getty Images

March 21, 2003: President George W. Bush meets with his war council in the Situation Room of the White House. Present at the table are, from foreground, National Security Adviser Condoleezza Rice, CIA Director George Tenet, Chief of Staff Andy Card, Secretary of State Colin Powell, Secretary of Defense Donald Rumsfeld and Chairman of the Joint Chiefs of Staff Gen. Richard B. Myers. / Getty Images

March 26, 2003: U.S. Marines from Task Force Tarawa search for Iraqi troops in the southern Iraqi city of Nasiriyah. As night falls, the Marines are on alert for a counter attack from Iraqi troops. / Getty Images

April 1, 2003: In this handout image from night-scope video, U.S. military personnel carry U.S. Pfc. Jessica Lynch off of a helicopter at an undisclosed location in Iraq. Lynch was rescued from a hospital in Nasiriyah, Iraq. Lynch had been missing since March 23, when she and members of her unit, the U.S. Army's 507th Maintenance Company, were ambushed by Iraqi forces. / Getty Images

April 9, 2003: U.S. Marines pull down a statue of Saddam Hussein in the center of Baghdad. / Getty Images

March 30, 2003: Women line up for a security check by British soldiers on the outskirts of Basra, as they try to flee from this southern Iraqi town. / Associated Press

April 13, 2003: Iraqi National Museum Deputy Director Mushin Hasan holds his head in his hands as he sits on destroyed artifacts in Bagdhad, Iraq. The museum was severely looted. / Getty Images

May 1, 2003: President Bush declares the end of major combat in Iraq as he speaks aboard the aircraft carrier USS Abraham Lincoln off the California coast. / AP

May 31, 2003: Iraqi men check a list as sheets containing the remains of bodies excavated from a mass grave lie in the desert on the outskirts of Musayib, approximately 30 miles south of Baghdad. Locals said the mass grave contained the remains of hundreds of Shia Muslims allegedly executed by Saddam Hussein's regime after their uprising following the 1991 Gulf War. / Getty Images

Dec. 15, 2003: The entrance to the "spider hole" where Saddam Hussein was hiding when he was captured is seen from inside the space in Ad Dawr, Iraq. Iraq's notorious dictator was captured in a raid at the compound on Dec. 13. / Getty Images

A photo of the capture of Saddam Hussein, subdued during his capture. / Getty Images

Jan. 28, 2004: A boy stands at the scene of a car bombing that killed at least three people in Baghdad. A suicide bomber blew up the explosive-packed car in front of the Shaheen Hotel, which was frequented by many westerners and where Iraq's labor minister lived. / Getty Images

March 3, 2004: Iraqi mourners carry the coffins of those killed the day before in a series of explosions in the Shia holy city of Karbala. / Getty Images

April 9, 2004: Iraqi insurgents wave their national flag as they celebrate in front of a burning U.S. military tanker after attacking it in Abu Gharib. / AFP via Getty Images

April 28, 2004: This late 2003 file image obtained by The Associated Press shows an unidentified detainee standing on a box with a bag on his head and wires attached to him, at the Abu Ghraib prison. / AP

May 3, 2004: People look at rows of graves at an overflowing cemetery built in a soccer arena, in Fallujah, Iraq. An estimated 1,300 Iraqis had been killed in the monthlong siege of Fallujah, and the death toll continued to rise as residents returned home to find more bodies. / Getty Images

Aug. 7, 2004: Iraqi Shia militiamen prepare to fire their weapons during clashes with U.S. Marines in Najaf, Iraq. / Getty Images

Aug. 27, 2004: Iraqi Shia faithful line up outside the shrine of Imam Ali in Najaf, to mark the end of conflict. The rebel leader Moqtada al-Sadr ordered his fighters to lay down their arms in a peace deal brokered by Iraq's most revered Shia cleric, Grand Ayatollah Ali al-Sistani. / Getty Images

Nov. 10, 2004: U.S. Marines search houses for insurgents in Fallujah, Iraq. / Getty Images

Nov. 22, 2004: U.S. Marines use explosives to open rooftop doors as they search houses for insurgents on in Fallujah, Iraq. / Getty Images

Jan. 17, 2005: Spc. Franklin Smith pulls away as a mortar blasts out of a tube at the edge of the U.S. airbase in Tal Afar, Iraq. U.S. mortaring teams frequently fired "harassment and interdiction" mortar fusillades from the base to suspected enemy positions or watched areas nearby. / Getty Images

Jan. 30, 2005: Voters look over their ballots before voting behind a cardboard screen on Election Day in Baghdad's Sadr City neighborhood. / Getty Images

May 12, 2005: The scene of a car bombing in eastern Baghdad. The device exploded near a busy marketplace in a mainly Shia district. / Getty Images

Feb. 22, 2006: Iraqis gather at the ruins of the al-Askari mosque in Samarra, Iraq. / Associated Press

Jan. 4, 2008: U.S. soldiers patrol the village of al-Wajihiya, 18 miles from Baquba, northeast of Baghdad. / AFP via Getty Images

March 19, 2008: An Iraqi boy watches as U.S. soldiers patrol his neighborhood in the Diyala province, northeast of Baghdad. / AFP via Getty Images

April 27, 2008: A woman walks with her children during a sandstorm in Baghdad. / Getty Images

Oct. 18, 2008: Shia demonstrators carry Iraqi flags during a protest against a proposed U.S.-Iraqi security pact in Baghdad. / Getty Images

June 23, 2009: Iraqi prisoners hold their hands above their heads as they are escorted by U.S. soldiers from one unit to another at a U.S.-run detention center in Camp Cropper on the outskirts of Baghdad. / AFP via Getty Images

Oct. 25, 2009: An Iraqi weeps as he walks away from the ministries of justice and labor following a suicide bombing. Twin suicide car bombs blasted the justice ministry and the provincial offices in central Baghdad, killing at least 90 people and injuring 600 others. / AFP via Getty Images

Nov. 28, 2009: Iraq's flag flutters in the wind as Iraqi Shia take part in Friday noon prayers in Sadr City. / AFP via Getty Images

Jan. 5, 2010: U.S. Army National Guard Spc. Jose Guillen-Verde hugs his mother, Denia Metivier, during a deployment ceremony in Fort Lauderdale, Fla. / Getty Images

Jan. 26, 2010: A crater marks the site of a car bomb's explosion near the Al-Hamra hotel in Baghdad. Three car bombs targeted hotels used by foreign journalists and businessmen in Baghdad. / Getty Images

April 25, 2010: Iraqi men carry the coffin of one of the victims of a triple bombing attack outside a mortuary in the Baghdad. / AFP via Getty Images

July 23, 2010: Smoke billows from a burning car in the northern Iraqi city of Kirkuk following a blast that seriously wounded the city's police chief, Borhan Habib Tayeb, and killed his son. / AFP via Getty Images

Sept. 20, 2010: A man sits on the rubble of his destroyed home a day after two near-simultaneous car bombs rocked Baghdad, killing 29 and wounding 111 in the city's deadliest day in a month. / Kahlil Al-Murshidi/AFP via Getty Images

Dec. 17, 2011: Soldiers from the 3rd Brigade's 1st Cavalry Division board a C-17 transport plane to depart from Iraq at Camp Adder, now known as Imam Ali Base, near Nasiriyah, Iraq. / Getty Images

Dec. 18, 2011: Iraqis wave behind a U.S. flag on the dashboard of a Mine-Resistant Ambush-Protected (MRAP) vehicle that's part of the 3rd Brigade Combat Team's 1st Cavalry Division, as part of the last U.S. military convoy to leave Iraq near Nasiriyah, Iraq. / Pool/Getty Images