Ukrainian service members of the 55th Separate Artillery Brigade stand next to a Vampire multiple launch rocket system before firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade prepare a Vampire multiple launch rocket system for firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

A Ukrainian service member of the 55th Separate Artillery Brigade prepare carries a shell for a Caesar self-propelled howitzer before firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

A Ukrainian service member of the 55th Separate Artillery Brigade prepare carries a shell for a Caesar self-propelled howitzer before firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade fire a Caesar self-propelled howitzer towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade prepare a Caesar self-propelled howitzer for firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade stand next to a Caesar self-propelled howitzer before firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade fire a Vampire multiple launch rocket system towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade fire a Vampire multiple launch rocket system towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

A Caesar self-propelled howitzer of the 55th Separate Artillery Brigade is seen before firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

A shell is seen in an ammo compartment of a Caesar self-propelled howitzer of the 55th Separate Artillery Brigade, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade fire a Caesar self-propelled howitzer towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

A Caesar self-propelled howitzer of the 55th Separate Artillery Brigade is seen after firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade fire a Caesar self-propelled howitzer towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi TPX IMAGES OF THE DAY 

A Ukrainian service member of the 55th Separate Artillery Brigade walks next to a Caesar self-propelled howitzer after firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

A Caesar self-propelled howitzer of the 55th Separate Artillery Brigade is seen after firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service members of the 55th Separate Artillery Brigade stand next to a Caesar self-propelled howitzer before firing towards Russian troops, amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 31, 2023. REUTERS/Viacheslav Ratynskyi 

Ukrainian service member of the anti-aircraft, missile and artillery division of the 57th separate motorised infantry brigade, checks the area at his position, amid Russia's attack on Ukraine, near the town of Chasiv Yar in Donetsk region, Ukraine May 17, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service member of the anti-aircraft, missile and artillery division of the 57th separate motorised infantry brigade, smokes at his position, amid Russia's attack on Ukraine, near the town of Chasiv Yar in Donetsk region, Ukraine May 17, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service member of the anti-aircraft, missile and artillery division of the 57th separate motorised infantry brigade, looks at a catalog with pictures of Russian drones, amid Russia's attack on Ukraine, at his position near the town of Chasiv Yar in Donetsk region, Ukraine May 17, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service member of the anti-aircraft, missile and artillery division of the 57th separate motorised infantry brigade, checks the area at his position, amid Russia's attack on Ukraine, near the town of Chasiv Yar in Donetsk region, Ukraine May 17, 2023. REUTERS/Sofiia Gatilova 

Polish soldiers stand in front of the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

Poland's Defence Minister Mariusz Blaszczak speaks in front of the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

HIMARS system is seen during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

Poland's Defence Minister Mariusz Blaszczak walks in front of the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

A Polish soldier looks inside the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

A Polish soldier holds the hatch of the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

Poland's Defence Minister Mariusz Blaszczak speaks in front of the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

Poland's Defence Minister Mariusz Blaszczak walks in front of the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

Polish soldiers get into the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

A Polish soldier looks out from the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

A Polish soldier takes pictures of the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

A Polish soldier looks out from the HIMARS system during an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

Polish soldiers take a break for cigarettes after an event marking the delivery of the first HIMARS (High Mobility Artillery Rocket System) to the Polish Army at the airport in Warsaw, Poland May 15, 2023. REUTERS/Kacper Pempel 

Ukrainian service members from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, prepare fire a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service members from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, ride a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service members from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, ire a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service members from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, ride a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service members from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, prepare fire a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service members from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, fire a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

A Ukrainian service member from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, sits a top of a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

Ukrainian service members from a 110th Separate Mechanised Brigade of the Armed Forces of Ukraine, prepare fire a self-propelled howitzer "Dana", amid Russia's attack on Ukraine, near the town of Avdiivka in Donetsk region, Ukraine May 9, 2023. REUTERS/Sofiia Gatilova 

A shot is fired with Tower Bridge in the background during a 62-gun salute performed by members of the Honourable Artillery Company and A Battery at HM Tower of London as part of King Charles and Queen Camilla's coronation in London, Britain May 6, 2023. REUTERS/May James 

A shot is fired by members of the 206 (Ulster) Battery Royal Artillery at Royal Hillsborough Castle and Gardens as part of King Charles and Queen Camilla's coronation, in Hillsborough, Northern Ireland May 6, 2023. REUTERS/Damien Storan 

A shot is fired by members of the 206 (Ulster) Battery Royal Artillery at Royal Hillsborough Castle and Gardens as part of King Charles and Queen Camilla's coronation, in Hillsborough, Northern Ireland May 6, 2023. REUTERS/Damien Storan 

A shot is fired by members of the 206 (Ulster) Battery Royal Artillery at Royal Hillsborough Castle and Gardens as part of King Charles and Queen Camilla's coronation, in Hillsborough, Northern Ireland May 6, 2023. REUTERS/Damien Storan 

A shot is fired by members of the 206 (Ulster) Battery Royal Artillery at Royal Hillsborough Castle and Gardens as part of King Charles and Queen Camilla's coronation in in Hillsborough, Northern Ireland May 6, 2023. REUTERS/Damien Storan 

A shot is fired with Tower Bridge in the background during a 62-gun salute performed by members of the Honourable Artillery Company and A Battery at HM Tower of London as part of King Charles and Queen Camilla's coronation in London, Britain May 6, 2023. REUTERS/May James 

A shot is fired with Tower Bridge in the background during a 62-gun salute performed by members of the Honourable Artillery Company and A Battery at HM Tower of London as part of King Charles and Queen Camilla's coronation in London, Britain May 6, 2023. REUTERS/May James 

A shot is fired with Tower Bridge in the background during a 62-gun salute performed by members of the Honourable Artillery Company and A Battery at HM Tower of London as part of King Charles and Queen Camilla's coronation in London, Britain May 6, 2023. REUTERS/May James 

A shot is fired with Tower Bridge in the background during a 62-gun salute performed by members of the Honourable Artillery Company and A Battery at HM Tower of London as part of King Charles and Queen Camilla's coronation in London, Britain May 6, 2023. REUTERS/May James 

A shot is fired with Tower Bridge in the background during a 62-gun salute performed by members of the Honourable Artillery Company and A Battery at HM Tower of London as part of King Charles and Queen Camilla's coronation in London, Britain May 6, 2023. REUTERS/May James 

A shot is fired with Tower Bridge in the background during a 62-gun salute performed by members of the Honourable Artillery Company and A Battery at HM Tower of London as part of King Charles and Queen Camilla's coronation in London, Britain May 6, 2023. REUTERS/May James 

An Honourable Artillery Company vehicle is pictured as troops prepare to fire a 62-gun salute at the Tower of London, on the day of the coronation of Britain's King Charles and Queen Camilla, in London, Britain May 6, 2023. REUTERS/May James 

Philippine President Ferdinand "Bongbong" Marcos Jr. steps out of a high mobility artillery rocket system (HIMARS) that he inspected before a live fire exercise in the annual joint military exercises between U.S. and Philippine troops called "Balikatan" or shoulder-to-shoulder, held in San Antonio, Zambales province, Philippines, April 26, 2023. REUTERS/Eloisa Lopez 

A high mobility artillery rocket system (HIMARS) is fired during a live fire exercise in the annual joint military exercises between U.S. and Philippine troops called "Balikatan" or shoulder-to-shoulder, held in San Antonio, Zambales province, Philippines, April 26, 2023. REUTERS/Eloisa Lopez 

Philippine President Ferdinand "Bongbong" Marcos Jr. inspects a high mobility artillery rocket system (HIMARS) beside a U.S. soldier before a live fire exercise in the annual joint military exercises between U.S. and Philippine troops called "Balikatan" or shoulder-to-shoulder, held in San Antonio, Zambales province, Philippines, April 26, 2023. REUTERS/Eloisa Lopez 

Philippine President Ferdinand "Bongbong" Marcos Jr. inspects a high mobility artillery rocket system (HIMARS) beside a U.S. soldier before a live fire exercise in the annual joint military exercises between U.S. and Philippine troops called "Balikatan" or shoulder-to-shoulder, held in San Antonio, Zambales province, Philippines, April 26, 2023. REUTERS/Eloisa Lopez 

Philippine President Ferdinand "Bongbong" Marcos Jr. sits inside a high mobility artillery rocket system (HIMARS) beside a U.S. soldier, before a live fire exercise in the annual joint military exercises between U.S. and Philippine troops called "Balikatan" or shoulder-to-shoulder, held in San Antonio, Zambales province, Philippines, April 26, 2023. REUTERS/Eloisa Lopez 

Members of the King's Troop Royal Horse Artillery take part in an Advanced Mounted Gunner Pass Out assessment ahead of selection for taking part in the forthcoming Coronation of King Charles III, at the Royal Artillery Barracks, Woolwich in London, Britain, April 24, 2023. REUTERS/Toby Melville