Civil volunteer movement helping Ukrainian forces in the war in Donbas

Euromaidan, or the Maidan Uprising, was a wave of demonstrations and civil unrest in Ukraine, which began on 21 November 2013 with large protests in Maidan Nezalezhnosti in Kyiv. The protests were sparked by President Viktor Yanukovych's sudden decision not to sign the European Union–Ukraine Association Agreement, instead choosing closer ties to Russia and the Eurasian Economic Union. Ukraine's parliament had overwhelmingly approved of finalizing the Agreement with the EU, but Russia had put pressure on Ukraine to reject it. The scope of the protests widened, with calls for the resignation of Yanukovych and the Azarov government. Protesters opposed what they saw as widespread government corruption, abuse of power, human rights violations, and the influence of oligarchs. Transparency International named Yanukovych as the top example of corruption in the world. The violent dispersal of protesters on 30 November caused further anger. Euromaidan led to the 2014 Revolution of Dignity.

A social network is a social structure made up of a set of social actors, sets of dyadic ties, and other social interactions between actors. The social network perspective provides a set of methods for analyzing the structure of whole social entities as well as a variety of theories explaining the patterns observed in these structures. The study of these structures uses social network analysis to identify local and global patterns, locate influential entities, and examine network dynamics.

A thermographic camera is a device that creates an image using infrared (IR) radiation, similar to a normal camera that forms an image using visible light. Instead of the 400–700 nanometre (nm) range of the visible light camera, infrared cameras are sensitive to wavelengths from about 1,000 nm to about 14,000 nm (14 μm). The practice of capturing and analyzing the data they provide is called thermography.

An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous" for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications. These include aerial photography, precision agriculture, forest fire monitoring, river monitoring, environmental monitoring, policing and surveillance, infrastructure inspections, smuggling, product deliveries, entertainment, and drone racing.

Armour with two or more plates spaced a distance apart falls under the category of spaced armour. Spaced armour can be sloped or unsloped. When sloped, it reduces the penetrating power of bullets and solid shot, as after penetrating each plate projectiles tend to tumble, deflect, deform, or disintegrate; spaced armour that is not sloped is generally designed to provide protection from explosive projectiles, which detonate before reaching the primary armour. Spaced armour is used on military vehicles such as tanks and combat bulldozers. In a less common application, it is used in some spacecraft that use Whipple shields.

The Ministry of Defence of Ukraine is the ministry of the Ukrainian government that oversees national defence and the Armed Forces of Ukraine. The head of the ministry is the Minister of Defence. The President of Ukraine is the Supreme Commander-in-Chief of the Armed Forces of Ukraine.

A ghillie suit is a type of camouflage clothing designed to resemble the background environment such as foliage, snow or sand. Typically, it is a net or cloth garment covered in loose strips of burlap (hessian), cloth, or twine, sometimes made to look like leaves and twigs, and optionally augmented with scraps of foliage from the area.

Laundry refers to the washing of clothing and other textiles, and, more broadly, their drying and ironing as well. Laundry has been part of history since humans began to wear clothes, so the methods by which different cultures have dealt with this universal human need are of interest to several branches of scholarship. Laundry work has traditionally been highly gendered, with the responsibility in most cultures falling to women. The Industrial Revolution gradually led to mechanized solutions to laundry work, notably the washing machine and later the tumble dryer. Laundry, like cooking and child care, is still done both at home and by commercial establishments outside the home.

A bulletproof vest, also known as a ballistic vest or a bullet-resistant vest, is an item of body armor that helps absorb the impact and reduce or stop penetration to the torso from firearm-fired projectiles and fragmentation from explosions. The vest may come in a soft form, as worn by many police officers, prison guards, security guards, and some private citizens, used to protect against stabbing attacks or light projectiles, using metallic or para-aramid components. Soldiers, police tactical units, marines, and special operations forces wear hard armors, either in conjunction with soft armor or alone, to protect against rifle ammunition or fragmentation.

A combat helmet or battle helmet is a type of helmet. It is a piece of personal armor designed specifically to protect the head during combat. Modern combat helmets are mainly designed to protect from shrapnel and fragments, offer some protection against small arms, and offer a mounting point for devices such as night-vision goggles and communications equipment.

A sight is an aiming device used to assist in visually aligning ranged weapons, surveying instruments or optical illumination equipments with the intended target. Sights can be a simple set or system of physical markers that have to be aligned together with the target, or optical devices that allow the user to see an optically enhanced — often magnified — target image aligned in the same focus with an aiming point. There are also sights that actively project an illuminated point of aim onto the target itself so it can be observed by, such as laser sights and infrared illuminators on some night vision devices.

Professional diving is underwater diving where the divers are paid for their work. The procedures are often regulated by legislation and codes of practice as it is an inherently hazardous occupation and the diver works as a member of a team. Due to the dangerous nature of some professional diving operations, specialized equipment such as an on-site hyperbaric chamber and diver-to-surface communication system is often required by law, and the mode of diving for some applications may be regulated.

The term sapper is a historical term for a combat engineer that remains in use to describe certain personnel in various armies. The term is used, for example, in the armies of the United Kingdom and some Commonwealth nations and in the U.S. military.

A sniper is a military/paramilitary marksman who engages targets from positions of concealment or at distances exceeding the target's detection capabilities. Snipers generally have specialized training and are equipped with high-precision rifles and high-magnification optics, and often also serve as scouts/observers feeding tactical information back to their units or command headquarters.

An internally displaced person (IDP) is someone who is forced to leave their home but who remains within their country's borders. They are often referred to as refugees, although they do not fall within the legal definitions of a refugee.

Missing in action (MIA) is a casualty classification assigned to combatants, military chaplains, combat medics, and prisoners of war who are reported missing during wartime or ceasefire. They may have been killed, wounded, captured, executed, or deserted. If deceased, neither their remains nor grave have been positively identified. Becoming MIA has been an occupational risk for as long as there has been warfare.

Come Back Alive is a foundation that provides support to service members in the Armed Forces of Ukraine. The foundation purchases arms and equipment to help outfit Ukrainian servicemembers. It also provides additional training to soldiers in areas such as marksmanship, first aid, artillery, and drone operation. Between May 2014 through June 2022, the foundation raised over $100 million.

Come Back Alive is a foundation that provides support to service members in the Armed Forces of Ukraine. The foundation purchases arms and equipment to help outfit Ukrainian servicemembers. It also provides additional training to soldiers in areas such as marksmanship, first aid, artillery, and drone operation. Between May 2014 through June 2022, the foundation raised over $100 million.

The Ministry of Defence of Ukraine is the ministry of the Ukrainian government that oversees national defence and the Armed Forces of Ukraine. The head of the ministry is the Minister of Defence. The President of Ukraine is the Supreme Commander-in-Chief of the Armed Forces of Ukraine.

The Ukrainian diaspora comprises Ukrainians and their descendants who live outside Ukraine around the world, especially those who maintain some kind of connection to the land of their ancestors and maintain their feeling of Ukrainian national identity within their own local community. The Ukrainian diaspora is found throughout numerous regions worldwide including other post-Soviet states as well as in Canada and other countries such as Poland, the United States, the UK and Brazil.

The Armed Forces of Ukraine, most commonly known in Ukraine as ZSU or anglicized as AFU, are the military forces of Ukraine. All military and security forces, including the Armed Forces, are under the command of the President of Ukraine and subject to oversight by a permanent Verkhovna Rada parliamentary commission. They trace their lineage to 1917, while the modern armed forces were formed after Ukrainian independence in 1991.

A non-governmental organization (NGO) or non-governmental organisation is an organization that generally is formed independent from government. They are typically nonprofit entities, and many of them are active in humanitarianism or the social sciences; they can also include clubs and associations that provide services to their members and others. Surveys indicate that NGOs have a high degree of public trust, which can make them a useful proxy for the concerns of society and stakeholders. However, NGOs can also be lobby groups for corporations, such as the World Economic Forum. NGOs are distinguished from international and intergovernmental organizations (IOs) in that the latter are more directly involved with sovereign states and their governments.

The Order of Bohdan Khmelnytsky is a Ukrainian military award named after Bohdan Khmelnytsky, Hetman of the Ukrainian Cossacks. The award was established on May 3, 1995 by Ukrainian president Leonid Kuchma to commemorate the 50th anniversary of the end of the Second World War in Europe.

The Order of Princess Olga is a Ukrainian civil decoration, featuring Olga of Kiev and bestowed to women for "personal merits in state, production, scientific, educational, cultural, charity and other spheres of social activities, for upbringing children in families". It was established by Presidential Decree № 827/97 of 15 August 1997 and has three grades (classes), the first being the highest. The 1st grade medal is adorned with four rectangular amethysts and features a gilded ornament with silver parts. The two other grades also feature precious stones.

The Order of Merit first, second or third class, is the Ukrainian order of merit, given to individuals for outstanding achievements in economics, science, culture, military or political spheres of activity. It was first established by Ukrainian president Leonid Kuchma on September 22, 1996.

The "Defender of the Motherland" Medal is a commemorative medal awarded by Ukraine. It was established on 8 October 1999 by presidential decree № 1299.

The president of Ukraine is the head of state of Ukraine. The president represents the nation in international relations, administers the foreign political activity of the state, conducts negotiations and concludes international treaties. The president is directly elected by the citizens of Ukraine for a five-year term of office, limited to two terms consecutively.

George Tuka or Heorhiy/Georgiy Tuka is a Ukrainian politician and activist. From 29 April 2016 to 29 August 2019 Tuka was Deputy Minister for the temporarily occupied territories and internally displaced persons in the Groysman government. In 2015 and 2016 he was governor of Luhansk Oblast.

Chernihiv, also known as Chernigov, is a city and municipality in northern Ukraine, which serves as the administrative center of Chernihiv Oblast and Chernihiv Raion within the oblast. Chernihiv's population is 282,747.

Kharkiv, also known as Kharkov, is the second-largest city and municipality in Ukraine. Located in the northeast of the country, it is the largest city of the historic Slobozhanshchyna region. Kharkiv is the administrative centre of Kharkiv Oblast and of the surrounding Kharkiv Raion. It has a population of 1,421,125.

Poltava is a city located on the Vorskla River in central Ukraine. It serves as the administrative center of Poltava Oblast and of the surrounding Poltava Raion within the oblast. Poltava is administratively incorporated as a city of oblast significance and does not belong to the raion. It has a population of 279,593.