There is a passage in one of Eisenhower’s books about taking Cherbourg. It quotes a German commander who said, “We decided to surrender, when the Americans began using their long range artillery as sniper rifles.
That would be the M12 - ‘King Kong.’ https://en.wikipedia.org/wiki/M12_Gun_Motor_Carriage
The classic response to sniper fire is to call in artillery. Unlike most other armies, American troops would use the M12 in direct-fire mode as enormous counter-sniper weapons instead of using a barrage to flatten an area.
M12 being used in direct fire role in a city, perhaps even to respond to sniper fire. Note the gun is in full recoil. https://www.warhistoryonline.com/wp-content/uploads/2016/02/M-12-6.jpg
