The war in Ukraine is pushing Russia away from its WWII-style artillery strategy, and experts say it's 'a concerning trend'

• Russia and Ukraine have relied heavily on artillery to batter each other's forces.
• Both sides have had to scramble to find more ammunition to keep those guns firing.
• The dynamic has prompted Russia to reevaluate how it fires its big guns.

As the war in Ukraine has become an artillery battle, both sides are scrambling to compensate for a shortage of howitzer shells.