Operation Sayeed (Arabic: عملية الصياد) also known as Operation Hunter in English, was a series of operations conducted in western Al Anbar Governorate by the United States Marine Corps in 2005. It was an umbrella operation, consisting of at least 11 named operations between July 2005 to December 2005. The purpose was to drive Al-Qaeda in Iraq forces from the Western Euphrates River Valley. Some parts of Operation Sayeed were Operation Steel Curtain and Operation Iron Fist.Al-Anbar Awakening: U.S. Marines and Counterinsurgency in Iraq, 2004–2009. Volume 1: American Perspectives, p. 105

There were three goals of Operation Sayeed, in addition to removing AQI from the Western Euphrates River Valley; they were to ensure there was a secure "climate" and "environment" to conduct a referendum in October and national elections in December 2005; and the third was to secure the control of the Iraqi border to the Iraqi people.McWilliams, Timothy S., and Wheeler, Kurtis P., Al-Anbar Awakening: Volume 1 (American Perspectives U.S. Marines and Counterinsurgency in Iraq, 2004-2009), 2015, CreateSpace Independent Publishing Platform, Al-Anbar Governorate was divided into areas of operations: II Marine Expeditionary Force (codenamed Operation Atlanta) included Area of Operations Denver (western region), Area of Operations Topeka (Ramadi and surrounding area), Area of Operations Raleigh (Fallujah and surrounding area) and Area of Operations Oshkosh (al-Taqaddum).W Estes, Kenneth U.S. Marines in Iraq, 2004–2005: Into the Fray: U.S. Marines in the Global War on Terror, 2011, CreateSpace Independent Publishing Platform,

Events Area of Operations Denver Battle of Haditha and Operation Quick Strike Between 1–4 August, the Battle of Haditha took place: On 1 August, A 6-man U.S. Marine sniper team were ambushed in Haditha by Ansar al-Sunna insurgents 5 of the team were killed and 1 was missing;W Estes, Kenneth, U.S. Marines in Iraq, 2004–2005: Into the Fray: U.S. Marines in the Global War on Terror, 2011, CreateSpace Independent Publishing Platform In response a U.S. Marine task force from 3rd Battalion, 25th Marines cordoned off and searched Haditha,Giaffo, Lou, Gooch's Marines,2013, Rosedog Pr, where they engaged in combat with Ansar al-Sunna and AQI terrorists.

Regimental Combat Team 2, with the assistance of 2nd Squadron 14th Cavalry Regiment had planned to carryout Operation Lightning Strike II in August-targeting the town of Anah and the town of Qādisiyyah to disrupt insurgent activities and show the Iraqi government the deployment of a competent security force. However the operation did not take place due to the clashes in Haditha and were reallocated to Operation Quick Strike (3–11 August). The force cordoned off and searched Haqlaniyah and Barwanah, 2nd LAR and 3rd Battalion, 25th Marines prepared to move into Haqlaniyah, whilst K and L Companies of 3rd Battalion, 2nd Marines and 2nd platoon A Company, 1st Tank Battalion moved into an assembly area west of the Euphrates after an Iraqi special operations company secured it; Iraqi troops from the 1st Division were part of the operation. L Company of 3rd Battalion, 2nd Marines and 2nd platoon A Company, 1st Tank Battalion prepared to clear Barwanah. Marines from 1st Force Reconnaissance Company provided raid and sniper support. On 4 August, Marine battalions attacked through the villages from the north, 3rd Battalion, 2nd Marines only encountered sporadic resistance and set a base to support continuing operations. Resistance in both Haditha, Haqlaniyah and Barawanah increased, the added combination of supporting airstrikes suppressed resistance. The body of the missing Marine was found in Haqlaniyah; the Operation resulted in 15 insurgents killed and a further 63 detained, Coalition forces lost 14 killed and 6 wounded, one Iraqi special forces operative was also killed.Gilbert, Oscar E., Marine Corps Tank Battles in the Middle East, 2015, Casemate

Operation Cyclone On 11 September, 2nd LAR and Iraqi forces established a cordon around Ar-Rutbah to begin Operation Cyclone. Marine Force Recon and Iraqi special forces swept through the town from the north whilst K company, 3rd Battalion, 6th Marines, supported by AAV's and a platoon from 2nd LAR, swept in from the south, targeting pre-selected houses. The operation was the last conducting by 2nd LAR in Iraq before rotating back to the United States in September.

Operations Mustang, Lightning Strike and Green Light 4th squadron, 14th Cavalry Regiment, cleared the village of al-Ash on 16 September (known as Operation Mustang); they repeated this in Operation Lightning Strike on 28–29 September, clearing Anah and Qadisiyah (the operation deferred by RCT-2 in August because of the substitution of Operation Quick Strike to clear Barwanah and to stop counterattacks against 3d Battalion, 25th Marines). 3rd Battalion 504th Infantry Regiment cleared a military housing compound in Baghdadi in Operation Green Light.

Operation Iron Fist

Between 1–7 October, 3rd Battalion, 6th Marines carried out its first major operation since relieving 3rd Battalion, 2nd Marines in Al-Qaim-Operation Iron Fist, in the village of Sadah and the eastern half of Karabillah; its aim was to eliminate insurgents, clear routes and establish battle positions. The Marines were supported by a platoon each of tanks, combat engineers and amphibious assault vehicles; the operation also provided a deception to distract insurgents while units prepared for Operation River Gate. On 1 October, the task force cleared Sadah from east to west with three rifle companies, fighting sporadically with insurgents who fought from prepared positions with small arms, rocket launchers, mortars and explosive devices. The task force killed an estimated 12 insurgents and encamped on a wadi between Sadah and Karabillah, a troop of the 4th squadron 14th Cavalry Regiment screened the left bank of the Euphrates river whilst mobile assault platoons of the Marine battalion's weapons company blocked the roads between the two towns.

2 October saw stiffer opposition from the insurgents fighting in Karabillah, the Marines advanced through the town over the following 3 days, using all their direct fire weapons and mortars, Marine aircraft delivered rockets, hellfire missiles, GBU-12s and other bombs. The insurgent death toll increased to 51, whilst the task force lost 1 Marine killed and 9 wounded; the operation ended on 7 October, with two battle positions established for two rifle platoons, patrolling and small arms engagements continued for several weeks, but a foothold for further operations in the west had been established-which would be Operation Steel Curtain.

Operation River Gate Between 3–19 October (some sources say 20) 3rd Battalion, 1st Marines, 1st LAR and 3rd Battalion 504th Infantry Regiment, along with Iraqi security forces carried out Operation River Gate to continue the disruption of insurgents in Hadithah, Haqlaniyah and Barwanah and secure the towns. The Coalition forces encountered numerous small arms fire attacks and 13 IED attacks; Marine Aircraft Group 26 carried out heliborne assaults with elements of the 82nd Airborne Division, 1st Reconnaissance Battalion, 1st brigade of the Iraqi 1st Division and the 2nd Marine Division with the units surrounding Haditha. In addition, helicopters assigned to Army paratroopers and Regimental Combat Team 2 also conducted a combined air assault raid by 2nd Reconnaissance Battalion and an Iraqi special operations company in the vicinity of Abu Hyat against a known HVT, the force took several detainees, Coalition forces killed 12 insurgents, detained over 172 more, and found 32 weapons caches and 95 IED devices and mines. Consequently, they established a permanent base to provide continued security. 3rd platoon, C Company, 1st Combat Engineer Battalion established bases in each town.

Operation Steel Curtain Operation Steel Curtain was focused on disrupting and denying AQI safe havens and freedom of movement in western Al-Anbar Governorate, establishing a persistent presence in this region, restoring Iraqi control of the border with Syria, and setting the conditions for the constitutional referendum and national election. Operation Steel Curtain began on 3 November and lasted until 22 November; entailing considerable fighting Syria-Iraq border, which resulted in the elimination of a significant foreign fighter force.Shultz, Robert, The Marines Take Anbar: The Four-Year Fight Against Al Qaeda, 2013, Naval Institute Press, A combined US Marine, Army and Iraqi Army Task Force swept west to east through Husaybah and continued east through Karabillah, clearing both towns of local insurgents and foreign jihadist and established a permanent presence in the town. Nearly two weeks into the Operation, US Marines cleared the town of Ubaydi, throughout the fight, the marines had to call in continuous air support, in total 67 airstrikes were called in by controllers and over 100 precision-guided bombs munitions were employed, aviation played a crucial role in combat resupply of tank ammunition and water as well as multiple casualty evacuations. The Marine assault forces suffered 10 killed and 59 wounded, whilst the insurgents lost 139 killed and 388-400 captured. In the aftermath of the operation, the Iraqi 1st Brigade was able to establish its headquarters in Al-Qaim. On 19 November Haditha killings took place.J Schlosser, Nicholas, U.S. Marines in Iraq, 2004 – 2008 Anthology and Annotated Bibliography: U.S. Marines in the Global War on Terrorism, 2012, CreateSpace Independent Publishing Platform ISBN, 1470095246

Operation Iron Hammer Between 30 November – 4 December, 2nd Battalion, 1st Marines carried out Operation Iron Hammer-a clearing action across the Euphrates from Hit, while 2nd Battalion, 114th Field Artillery Regiment and the Iraqi 1st battalion, 2nd Brigade, 7th Division secured Hit itself. The Marine battalion, a company of Iraqi troops and 30 Desert protector scouts (also known as Army scouts)Mockaitis, Thomas R., The Iraq War Encyclopedia , ABC-CLIO, 2013 crossed to clear Hai al-Becker district and to establish a base for the Iraqi battalion to occupy, thereby securing the eastern side of the city. With this improved security, the Hit bridge was reopened to foot traffic, the operation also detained 19 suspected insurgents and removed 9 IEDs.

Operation Liberty Express Operation Liberty Express was conducted from 1 September through to 30 December by US and Iraqi forces to protect the polling stations on 15 October's referendum and on 15 December national election. The operation focused on expanding Coalition forces and the Ministry of Defense and Ministry of Interior control throughout Al-Anbar Governorate, while providing support to the Independent Electoral Commission in Iraq for the constitutional referendum and elections.

Operation Liberty Express was an extension of Operation Guardian Sword (6 June – 15 August)-the operations objectives called for neutralizing the insurgencies in Ramadi while covering the rotation of combat units and personnel in other units to support the upcoming referendum and election, the operation included a number of subsidiary operations, Operation Guardian Sword ended with the relief of a US Army Brigade assigned to the 2nd Marine Division. Operation Lightning Express composed of four subsidiary phase operations: one of which was Operation Guardian Shield which was aimed at covering force rotations over a two-month period.