Expeditionary warfare in the context of "String of Pearls (Indian Ocean)"

The United States Marine Corps (USMC), also referred to as the United States Marines or simply the Marines, is the maritime land force service branch of the United States Armed Forces. It is responsible for conducting expeditionary and amphibious operations through combined arms, implementing its own infantry, artillery, aerial, and special operations forces. The U.S. Marine Corps is a part of the United States Department of Defense and is one of the six armed forces of the United States and one of the eight uniformed services of the United States.

The Marine Corps has been part of the United States Department of the Navy since 30 June 1834 with its sister service, the United States Navy. The USMC operates installations on land and aboard sea-going amphibious warfare ships around the world. Additionally, several of the Marines' tactical aviation squadrons, primarily Marine Fighter Attack squadrons, are also embedded in Navy carrier air wings and operate from the aircraft carriers.

Overseas military bases of the United Kingdom enable the British Armed Forces to conduct expeditionary warfare and maintain a forward presence. Bases tend to be located in or near areas of strategic or diplomatic importance, often used for the build-up or resupply of military forces, as was seen during the 1982 Falklands War with the use of RAF Ascension Island as a staging post. Most of the bases are located on British Overseas Territories or former colonies which retain close diplomatic ties with the British government.

Apart from the main operating bases, the British military has personnel stationed at approximately 145 overseas military installations located across 42 countries. Most of these are small contingents. However, some sixty facilities are run directly by the British Armed Forces, including seventeen installations in Cyprus. Allied countries host British military personnel in some sixty-nine facilities, including in Oman, at sixteen locations, and Saudi Arabia, where there are fifteen. Six of the countries with a fixed UK military presence are featured on the Foreign and Commonwealth Office's list of 30 'Human Rights Priority Countries': Bahrain, Iraq, Saudi Arabia, Somalia, Syria and Yemen.

The Royal Navy (RN) is the naval warfare force of the United Kingdom, responsible for defending the UK, the Crown Dependencies, and the Overseas Territories from naval attack or invasion. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the English Navy of the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service.

From the early 18th century until the Second World War, it was the world's most powerful navy. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority. Following World War I, it was significantly reduced in size. During the Cold War, the Royal Navy transformed into a primarily anti-submarine force, hunting for Soviet submarines and mostly active in the GIUK gap. Following the collapse of the Soviet Union, its focus returned to expeditionary operations.

Forward-basing, also known as forward deployment and forward presence, is a practice used by some militaries to establish an enduring presence in a foreign country as a means of power projection and furthering national interests.

Forward-based personnel, equipment and facilities can be used to carry out a variety of tasks, including expeditionary warfare, deterrence, logistical support, joint training and intelligence gathering. In addition to these strategic benefits, forward-based units have the tactical benefit of being able to respond to threats quicker due to their closer proximity. Aside from these advantages, forward basing also has its risks. Forward basing is reliant on access agreements with the host nation but politics risks this permission being revoked at any time. They also face operational risks due to their closer proximity to threats.

The Battle of Badr or sometimes called The Raid of Badr (Arabic: غَزْوَةُ بَدْرٍ [ɣazwatu badr]; Ghazwahu Badr), also referred to as The Day of the Criterion (Arabic: يَوْمُ الْفُرْقَانْ, Arabic pronunciation: [jawm'ul fur'qaːn]; Yawm al-Furqan) in the Qur'an and by Muslims, was fought on 13 March 624 CE (17 Ramadan, 2 AH), near the present-day city of Badr, Al Madinah Province in Saudi Arabia. Muhammad, commanding an army of his Sahaba, defeated an army of the Quraysh led by Amr ibn Hishām, better known among Muslims as Abu Jahl. The battle marked the beginning of the six-year war between Muhammad and his tribe. The Battle of Badr took place after five or six unsuccessful attempts by the Muslims to intercept and raid Meccan trade caravans between 623 and early 624 CE.

Muhammad took keen interest in capturing Meccan caravans and their wealth after his migration to Medina. A few days before the battle, when he learnt of a Makkan caravan returning from the Levant led by Abu Sufyan ibn Harb, Muhammad gathered a small expeditionary force to raid it. Abu Sufyan, learning of the Muslim plan to ambush his caravan, changed course and took a longer route away from Muhammad's base at Medina and sent a messenger to Mecca, asking for help. Amr ibn Hisham commanded an army nearly one-thousand strong, approaching Badr and encamping at the sand dune al-'Udwatul Quswa.

The British Expeditionary Force (BEF) was the formation of the British Army on the Western Front during the First World War. In its original form it comprised six divisions, sent by Britain to France in 1914 to aid in resisting the German invasion.

Planning for a British Expeditionary Force began with the 1906–1912 Haldane Reforms of the British Army carried out by the Secretary of State for War Richard Haldane following the Second Boer War (1899–1902).

The Rwandan Civil War was a large-scale civil war in Rwanda which was fought between the Rwandan Armed Forces, representing the country's government, and the rebel Rwandan Patriotic Front (RPF) from 1 October 1990 to 18 July 1994. The war arose from the long-running dispute between the Hutu and Tutsi groups within the Rwandan population. The Rwandan Revolution, which broke out in 1959, had replaced the Tutsi monarchy with a Hutu-led republic, forcing more than 336,000 Tutsis to seek refuge in neighbouring countries. A group of these refugees in Uganda founded the RPF which, under the leadership of Fred Rwigyema and Paul Kagame, became a battle-ready army by the late 1980s.

The war began on 1 October 1990, when the RPF invaded north-eastern Rwanda, advancing 60 km (37 mi) into the country. They suffered a major setback when Rwigyema was killed in action on the second day. The Rwandan Army, assisted by expeditionary troops from France, gained the upper hand and the RPF were largely defeated by the end of October. Kagame, who had been in the United States during the invasion, returned to take command. He withdrew troops to the Virunga Mountains for several months before attacking again. The RPF began an insurgency, which continued until mid-1992 with neither side able to gain the upper hand. A series of protests forced Rwandan President Juvénal Habyarimana to begin peace negotiations with the RPF and domestic opposition parties. Despite disruption and killings by Hutu Power, a group of extremists opposed to any deal, and a fresh RPF offensive in early 1993, the negotiations were successfully concluded with the signing of the Arusha Accords in August 1993.