What is the first obstacle they encounter on their journey

"1917" is a 2019 war film directed by Sam Mendes that tells the story of two British soldiers, Lance Corporal Schofield and Lance Corporal Blake, who are tasked with delivering a message to stop an attack that will result in the massacre of 1,600 soldiers during World War I.

The first obstacle that the two soldiers encounter on their journey is crossing No Man's Land. No Man's Land was the area between the opposing trenches, and it was heavily fortified with barbed wire, craters, and mines. The Germans had been watching the British trenches and were prepared to open fire at any sign of movement. As the two soldiers began to cross No Man's Land, they immediately came under heavy fire from the German troops.

The soldiers had to navigate the dangerous terrain while avoiding detection and gunfire. They made their way through craters, crawled under barbed wire, and carefully stepped around landmines. At one point, Schofield fell into a hidden pit and injured himself, causing Blake to help him out.

The tension and danger of the scene are palpable, as the audience is acutely aware of the soldiers' vulnerability and the potential for their mission to fail. The sequence is shot in one continuous take, which intensifies the sense of urgency and danger.

In summary, the first obstacle that the two soldiers encounter in "1917" is crossing No Man's Land, a heavily fortified area between the opposing trenches. They have to navigate through craters, barbed wire, and landmines while avoiding detection and gunfire from the German troops. The tension and danger of the scene are heightened by the fact that it is shot in one continuous take.