Japan Ground Self-Defense Force (JGSDF) soldiers ride a Type 99 155mm self-propelled howitzer during a live fire exercise at JGSDF's training grounds in the East Fuji Maneuver Area in Gotemba, Japan May 22, 2021. Akio Kon/Pool via REUTERS

Russian Koalitsiya-SV self-propelled howitzers drive along Red Square during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in central Moscow, Russia May 9, 2021. REUTERS/Maxim Shemetov

Russian service members drive MSTA-S and Koalitsiya-SV self-propelled howitzers during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in Red Square in central Moscow, Russia May 9, 2021. REUTERS/Maxim Shemetov

Russian Koalitsiya-SV self-propelled howitzers drive along Red Square during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in central Moscow, Russia May 9, 2021. REUTERS/Evgenia Novozhenina

Russian service members drive a MSTA-S self-propelled howitzer during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in Red Square in central Moscow, Russia May 9, 2021. REUTERS/Maxim Shemetov

Coalition-SV class self-propelled howitzers drive during a rehearsal for the Victory Day parade, which marks the anniversary of the victory over Nazi Germany in World War Two, in Red Square in central Moscow, Russia May 7, 2021. REUTERS/Evgenia Novozhenina

Malian soldiers of the 614th Artillery Battery attend a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 25, 2021. Picture taken March 25, 2021. REUTERS/ Paul Lorgerie

A Malian soldier of the 614th Artillery Battery attends a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 25, 2021. Picture taken March 25, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery learn how to calculate the target position on the basis of collected data, during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 25, 2021. Picture taken March 25, 2021. REUTERS/ Paul Lorgerie

Malian Soldiers of the 614th Artillery Battery are pictured during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 25, 2021. Picture taken March 25, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery are pictured during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 25, 2021. Picture taken March 25, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery are pictured during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery learn how to calculate the target position on the basis of collected data, during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

A Malian soldier of the 614th Artillery Battery is pictured during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery learn how to calculate the target position on the basis of collected data, during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/Paul Lorgerie

Malian soldiers of the 614th Artillery Battery learn how to calculate the target position on the basis of collected data, during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery learn how to calculate the target position on the basis of data collected, during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery learn how to calculate the target position on the basis of collected data, during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Malian soldiers walk after raising the flag before a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/Paul Lorgerie

A Malian Soldier of the 614th Artillery Battery takes a selfie during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Malian soldiers of the 614th Artillery Battery learn how to calculate the target position on the basis of collected data, during a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Malian Soldiers of the 614th Artillery Battery are pictured before a training session on a D-30 howitzer with the European Union Training Mission (EUTM), to fight jihadists, in the camp of Sevare, Mopti region, in Mali March 23, 2021. Picture taken March 23, 2021. REUTERS/ Paul Lorgerie

Service members of the self-proclaimed Donetsk People's Republic (DNR) sit next to a howitzer during military exercises at a target range outside Donetsk, Ukraine August 25, 2020. REUTERS/Alexander Ermochenko

Service members of the self-proclaimed Donetsk People's Republic (DNR) fire a howitzer during military exercises at a target range outside Donetsk, Ukraine August 25, 2020. REUTERS/Alexander Ermochenko

U.S. Military Academy (USMA) cadets wear protective face masks as they fire an M119 105 mm Howitzer artillery weapon during tactical and physical training activities as part of Cadet Summer Training at West Point, New York, U.S., August 7, 2020. REUTERS/Mike Segar

A U.S. Military Academy (USMA) cadet wears a protective face mask while waiting to load a live 105 mm shell into an M119 105 mm Howitzer artillery weapon during tactical and physical training activities as part of Cadet Summer Training at West Point, New York, U.S., August 7, 2020. REUTERS/Mike Segar

U.S. Military Academy (USMA) cadets wear protective face masks while they wait to load live 105 mm shells into an M119 105 mm Howitzer artillery weapon during tactical and physical training activities as part of Cadet Summer Training at West Point, New York, U.S., August 7, 2020. REUTERS/Mike Segar

U.S. Military Academy (USMA) cadets wear protective face masks as they fire an M119 105 mm Howitzer artillery weapon during tactical and physical training activities as part of Cadet Summer Training at West Point, New York, U.S., August 7, 2020. REUTERS/Mike Segar

U.S. Military Academy (USMA) cadets wear protective face masks as they fire an M119 105 mm Howitzer artillery weapon during tactical and physical training activities as part of Cadet Summer Training at West Point, New York, U.S., August 7, 2020. REUTERS/Mike Segar

Soldiers fire a 8 inch (203 mm) M110 self-propelled howitzer during the live-fire, anti-landing Han Kuang military exercise, which simulates an enemy invasion, in Taichung, Taiwan July 16, 2020. REUTERS/Ann Wang

Soldiers fire M109A2 155mm howitzers during the live-fire, anti-landing Han Kuang military exercise, which simulates an enemy invasion, in Taichung, Taiwan July 16, 2020. REUTERS/Ann Wang

Russian MSTA-SM self-propelled howitzers drive during the Victory Day Parade in Red Square in Moscow, Russia, June 24, 2020. The military parade, marking the 75th anniversary of the victory over Nazi Germany in World War Two, was scheduled for May 9 but postponed due to the outbreak of the coronavirus disease (COVID-19). Pavel Golovkin/Pool via REUTERS

Russian MSTA-SM self-propelled howitzers drive during the Victory Day Parade in Red Square in Moscow, Russia June 24, 2020. The military parade, marking the 75th anniversary of the victory over Nazi Germany in World War Two, was scheduled for May 9 but postponed due to the outbreak of the coronavirus disease (COVID-19). REUTERS/Maxim Shemetov

A Russian MSTA-SM self-propelled howitzer drives during the Victory Day Parade in Moscow, Russia, June 24, 2020. The military parade, marking the 75th anniversary of the victory over Nazi Germany in World War Two, was scheduled for May 9 but postponed due to the outbreak of the coronavirus disease (COVID-19). Host photo agency via REUTERS

Russian Koalitsiya-SV self-propelled howitzers drive during the Victory Day Parade in Red Square in Moscow, Russia, June 24, 2020. The military parade, marking the 75th anniversary of the victory over Nazi Germany in World War Two, was scheduled for May 9 but postponed due to the outbreak of the coronavirus disease (COVID-19). Host photo agency/Iliya Pitalev via REUTERS

Russian MSTA-SM self-propelled howitzers drive during the Victory Day Parade in Red Square in Moscow, Russia, June 24, 2020. The military parade, marking the 75th anniversary of the victory over Nazi Germany in World War Two, was scheduled for May 9 but postponed due to the outbreak of the coronavirus disease (COVID-19). Host photo agency/Vladimir Pesnya via REUTERS

Russian Koalitsiya-SV self-propelled howitzers drive during the Victory Day Parade in Red Square in Moscow, Russia, June 24, 2020. The military parade, marking the 75th anniversary of the victory over Nazi Germany in World War Two, was scheduled for May 9 but postponed due to the outbreak of the coronavirus disease (COVID-19). Host photo agency/Mikhail Voskresensliy via REUTERS

The toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, lies on the ground after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

People watch workmen get ready to load the toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, onto a truck after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

The toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, lies on the ground after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

The toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, lies on the ground after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

Workmen load and covering the toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, onto a truck after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

Workmen get ready to load the toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, onto a truck after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

Workmen load the toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, onto a truck after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

Workman loads the toppled Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, onto a truck after protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

Workmen get ready to load the toppled statue from the Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, onto a truck after being protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

Workmen get ready to load the toppled statue from the Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, onto a truck after being protesters against racial inequality pulled it down overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul

A statue from the Richmond Howitzers Monument, erected in 1892 to commemorate a Confederate artillery unit, lies after being toppled by protesters against racial inequality overnight in Richmond, Virginia, U.S. June 17, 2020. REUTERS/Jay Paul TPX IMAGES OF THE DAY

A serviceman of the self-proclaimed Donetsk People's Republic (DNR) fires a howitzer during a military exercise at a target range outside the town of Horlivka (Gorlivka), Ukraine May 21, 2020. REUTERS/Alexander Ermochenko

Servicemen of the self-proclaimed Donetsk People's Republic (DNR) fire howitzers during military exercises at a target range outside the town of Horlivka (Gorlivka), Ukraine May 21, 2020. REUTERS/Alexander Ermochenko

Russian servicemen drive self-propelled howitzers along the street during a rehearsal for the Victory Day parade, amid the coronavirus disease (COVID-19) outbreak, in Yekaterinburg, Russia April 14, 2020. REUTERS/Alexei Kolchin

U.S. Army soldiers from the 2nd Platoon, B battery 2-8 field artillery, fire a howitzer artillery piece at Seprwan Ghar forward fire base in Panjwai district, Kandahar province southern Afghanistan, June 12, 2011. Picture taken June 12, 2011. REUTERS/Baz Ratner/File Photo SEARCH "POY DECADE" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2019 PACKAGES. TPX IMAGES OF THE DAY.

A Turkish army howitzer is positioned near the Turkish-Syrian border in Sanliurfa province, Turkey, October 17, 2019. REUTERS/Murad Sezer

Japanese Ground Self-Defense Force's Type19 155 mm self-propelled howitzer takes part in an annual training session near Mount Fuji at Higashifuji training field in Gotemba, west of Tokyo, Japan August 22, 2019. REUTERS/Issei Kato

Japanese Ground Self-Defense Force fires FH70 155mm howitzer during an annual training session near Mount Fuji at Higashifuji training field in Gotemba, west of Tokyo, Japan August 22, 2019. REUTERS/Issei Kato

Japanese Ground Self-Defense Force soldiers onboard a Type19 155 mm self-propelled howitzer take part in an annual training session near Mount Fuji at Higashifuji training field in Gotemba, west of Tokyo, Japan August 22, 2019. REUTERS/Issei Kato

Japanese Ground Self-Defense Force's Type19 155 mm self-propelled howitzer takes part in an annual training session near Mount Fuji at Higashifuji training field in Gotemba, west of Tokyo, Japan August 22, 2019. REUTERS/Issei Kato

MSTA-S self-propelled artillery howitzers drive during a demonstration at the International military-technical forum ARMY-2019 at Patriot Congress and Exhibition Centre in Moscow Region, Russia June 25, 2019. REUTERS/Maxim Shemetov

Soldiers fire a 8 inch (203 mm) M110 self-propelled howitzer during the live fire Han Kuang military exercise, which simulates China's People's Liberation Army (PLA) invading the island, in Pingtung, Taiwan May 30, 2019. REUTERS/Tyrone Siu

Soldiers fire a 8 inch (203 mm) M110 self-propelled howitzer during the live fire Han Kuang military exercise, which simulates China's People's Liberation Army (PLA) invading the island, in Pingtung, Taiwan May 30, 2019. REUTERS/Tyrone Siu