US Navy (USN) SENIOR CHIEF Quartermaster (QMCS) Amy Coppedge gives navigation training to an Iraqi Navy officer aboard the USN Whidbey Island Class Dock Landing Ship USS ASHLAND (LSD 48). The Iraqi Navy and Marines are training with the Maritime Riverine Assistant Support Troop, comprised of Royal Navy and Royal Marines. The Iraqi military is afforded an opportunity to train aboard USN ships, because their country is not equipped with the proper platforms for certain training purposes. Maritime Riverine Assistant Support Troop and the Ashland are assisting in Maritime Security Operations (MSO) by training the Iraqi military to stand security watches and various shipboard operations...

The United States Marine Corps traces its roots to the Continental Marines of the American Revolutionary War, formed by a resolution of the Second Continental Congress on 10 November 1775. That date is celebrated as the Marine Corps's birthday. Throughout the late 19th and 20th centuries, Marine detachments served aboard Navy cruisers, battleships, and aircraft carriers. About 600,000 Americans served in the U.S. Marine Corps in World War II, performed a central role in the Pacific War. The Pacific theatre battles saw fierce fighting between Marines and the Imperial Japanese Army. The Battle of Iwo Jima was arguably the most famous Marine engagement of the war with high losses of 26,000 American casualties and 22,000 Japanese. By the end of WWII, the Corps expanded totaling about 485,000 Marines. Nearly 87,000 Marines were casualties during World War II (including nearly 20,000 killed), and 82 were awarded the Medal of Honor. The Korean War saw the Corps expand from 75,000 regulars to a force of 261,000 Marines, mostly reservists. 30,544 Marines were killed or wounded during the war. During Vietnam War Marines evacuated Saigon. Vietnam was the longest war for Marines. By its end, 13,091 had been killed in action, 51,392 had been wounded. Marines participated in the failed 1980 Iran hostage rescue attempt, the invasion of Grenada, the invasion of Panama. On 23 October 1983, the Marine headquarters building in Beirut, Lebanon, was bombed, causing the highest peacetime losses to the Corps in its history. 220 Marines and 21 other service members were killed. Marines liberated Kuwait during the Persian Gulf War, participated in combat operations in Somalia (1992–1995), and took part in the evacuation of American citizens from the US Embassy in Tirana, Albania. Following the attacks on 11 September 2001, Marine Corps, alongside the other military services, has engaged in global operations around the world in support of War on Terror. Marines were among first sent to Afghanistan in November 2001. Since then, Marine battalions and squadrons have been engaging Taliban and Al-Qaeda forces. U.S. Marines also served in the Iraq War.

Throughout the 18th and 19th centuries, the Royal Navy was the largest navy in the world and maintained ascendancy over its rivals through superiority in financing, tactics, training, organization, hygiene, dockyard facilities, logistical support, and warship design and construction. The French Revolutionary Wars and Napoleonic Wars saw the Royal Navy reach a peak of efficiency, dominating the navies of all adversaries, which spent most of the war blockaded in ports. Between 1815 and 1914, the Navy saw little serious action, owing to the absence of any opponent strong enough to challenge its dominance. Due to British leadership in the Industrial Revolution, unparalleled shipbuilding capacity, and financial resources, British naval warfare underwent a comprehensive transformation, brought by steam propulsion, metal ship construction, and explosive munitions. In 1859, the fleet was estimated to number about 1000 vessels. In 1889, Parliament passed the Naval Defence Act, which formally adopted the 'two-power standard', which stipulated that the Royal Navy should maintain a number of battleships at least equal to the combined strength of the next two largest navies. During the First World War, the British advantage proved insurmountable, leading the German navy to abandon any attempt to challenge British dominance. The Royal Navy had established a blockade of Germany, closed off access to the English Channel, and mined the North Sea. During the Dardanelles Campaign against the Ottoman Empire in 1915, the Royal Navy suffered heavy losses during an attempt to break through the system of minefields and shore batteries defending the straits. The most serious danger to the British Navy and merchant fleet came from the attacks of German U-boats. Unrestricted submarine warfare raised the prospect of Britain being starved into submission in 1917. The introduction of convoys brought the U-boat threat under control. In the inter-war period, the Washington and London Naval Treaties imposed the scrapping of some capital ships and limitations on new construction. The Royal Navy was stripped of much of its power. The re-armament of the Royal Navy restarted in 1932 - with the construction of new battleships and first purpose-built aircraft carriers. At the start of World War II in 1939, the Royal Navy was the largest in the world, with over 1,400 vessels, including 7 aircraft carriers, 15 battleships and battlecruisers. The Royal Navy suffered heavy losses in the first two years of the war with the most critical struggle of the Atlantic defending Britain's vital commercial supply lines against the U-boat attacks. The Navy was vital in guarding the sea lanes that enabled British forces to fight in North Africa, the Mediterranean, and the Far East. Naval supremacy was essential to amphibious operations such as the invasions of Northwest Africa, Sicily, Italy, and Normandy. By the end of the war the Royal Navy comprised over 4,800 ships, and was the second-largest fleet in the world. After the Second World War, the increasingly powerful United States Navy took on the former role of the Royal Navy as a global naval power and police force of the sea. The decline of the British Empire and the economic hardships forced the reduction in the size and capability of the Royal Navy. One of the most important operations conducted by the Royal Navy after the Second World War was the 1982 Falkland Islands War. Despite losing four naval ships, the Royal Navy fought and won a war over 8,000 miles (12,000 km) from Great Britain. The Royal Navy also took part in the Gulf War, the Kosovo conflict, the Afghanistan Campaign, and the 2003 invasion of Iraq.