Striking photos of the Ukraine war's front-line trenches echo scenes from the World Wars

• Ukrainian and Russian forces have dug sprawling trenches along the front lines of the war. 
• The trenches echo scenes from bloody combat of World War 1 and World War 2.
• Take a look at photos comparing trench warfare in Ukraine today and the historic World Wars. 

As Ukraine's troops go head-to-head with the Russian army, they face plenty of modern weapons, such as drones that can drop bombs on soldiers, Ka-52 attack helicopters armed to the teeth with anti-tank guided missiles, and precision munitions that can hit with accuracy not seen in past conflicts.