Armed Forces of Ukraine in the context of "Southern Ukraine offensive"

A commander-in-chief or supreme commander (supreme commander-in-chief) is the person who exercises supreme command and control over an armed force or a military branch. As a technical term, it refers to military competencies that reside in a country's executive leadership, a head of state, head of government, or other designated government official.

While often used interchangeably, the title of Supreme Commander–in–Chief is technically different, since the two titles can be in use simultaneously. For example, in the case of the Armed Forces of Ukraine, the supreme commander-in-chief is the president of Ukraine, while the commander-in-chief is its professional head.

The Commander-in-Chief of the Armed Forces of Ukraine (Ukrainian: Головнокомандувач Збройних сил України, romanized: Holovnokomanduvach Zbroinykh syl Ukrayiny) is the professional head of the Armed Forces of Ukraine. The position was created by President Volodymyr Zelenskyy on 28 March 2020, before which the Chief of the General Staff was the commander-in-chief.

On 6 September 2022, the Armed Forces of Ukraine launched a major counteroffensive against the Russian military during the Russo-Ukrainian war. As Ukraine announced the start of the Kherson counteroffensive in southern Ukraine in late August, Ukrainian forces also began a second counteroffensive in early September in Kharkiv Oblast, in eastern Ukraine.

As the Ukrainian military broke through Russian defensive lines, it recaptured multiple cities in a matter of days. On 7 September, the second day of the counteroffensive, the Ukrainian military advanced over 20 kilometres (12 mi) into Russian-held territory. The next day, Ukraine recaptured Balakliia and Shevchenkove as Russian forces withdrew and fled. On the 9th, Russia began announcing for evacuations in nearby areas as the Ukrainian military continued its advance. The next day, Ukraine retook the key cities of Izium and Kupiansk, securing access to the Oskil River. By the 11th, Ukraine successfully advanced up to 70 kilometres (43 mi) from the pre-counteroffensive front line. In turn, Russia's defence ministry announced the withdrawal of all forces west of the Oskil.

On 11 November 2022, the Armed Forces of Ukraine liberated and recaptured the city of Kherson and other areas of the Kherson Oblast and parts of the Mykolaiv Oblast on the right bank of the Dnipro River from Russian control. The Russian Armed Forces, which had occupied the city since 2 March 2022, withdrew and retreated to the left bank of the Kherson Oblast over the course of 9–11 November 2022.

The Ukrainian soldiers were greeted with cheers and large celebrations in the city square. The events were the culmination of the 2022 Kherson counteroffensive, and were seen as a large blow to Russian president Vladimir Putin, who had declared Kherson to be "part of Russia forever".

On 6 August 2024, during the Russo-Ukrainian war, the Armed Forces of Ukraine launched an incursion into Russia's Kursk Oblast and clashed with the Russian Armed Forces and Russian border guard. A state of emergency was declared in Kursk Oblast, and Russian reserves were rushed to the area. By the end of the first week, the Ukrainian military said it had captured 1,000 km (390 sq mi) of Russian territory, while Russian authorities acknowledged that Ukraine had captured 28 settlements.

In the second half of August the front stabilized, and in early October, the Ukrainian advance had stalled. From November, North Korean forces were sent to the province to support the Russian military. By the end of that month, Russian forces recaptured around half of the territory Ukraine had occupied. By 11 March 2025, most of the Ukrainian forces appeared to have retreated as a result of a Russian counterattack. Russian troops entered Sudzha, around which a shrinking pocket of territory still controlled by Ukraine had formed, the next day.

The State Border Guard Service of Ukraine (abbr. SBGSU; Ukrainian: Державна Прикордонна Служба України, romanized: Derzhavna Prykordonna Sluzhba Ukrainy, pronounced [derˈʒɑu̯nɐ prɪkorˈdɔnːɐ ˈsluʒbɐ ʊkrɐˈjinɪ]; abbr. ДПСУ, DPSU) is the border guard of Ukraine. It is an independent law enforcement agency, organized by the Constitution of Ukraine as a military formation, the head of which is subordinated to the President of Ukraine.

The Service was created on July 31, 2003, after the reorganization of the State Committee for Protection of the State Border. During wartime, units of the State Border Guard Service fall under the command of the Armed Forces of Ukraine. The State Border Guard Service includes the Ukrainian Sea Guard, which is the country's coast guard. It is also responsible for running Temporary Detention Centres, in which refugees are held.

The Ukrainian Navy (Ukrainian: Військово-морські сили Збройних сил України, ВМС ЗСУ, romanized: Viiskovo–morski syly Zbroinykh syl Ukrainy, VMS ZSU, lit. 'Military Naval Forces of the Armed Forces of Ukraine'), is the maritime force of Ukraine and one of the eight service branches of the Armed Forces of Ukraine.

The naval forces consist of five components: surface forces, submarine forces, naval aviation, coastal rocket-artillery and naval infantry. In 2022, the Ukrainian Navy had 15,000 personnel, including 6,000 naval infantry. It is headquartered in Odesa; prior to the 2014 annexation of Crimea by the Russian Federation, it was based in Sevastopol.