1. As the 100th anniversary of World War One approaches, more images from the era are coming to light from private collections, illuminating life during wartime on the front lines, in the rear echelons, and on the home front. Here’s a look at a new batch from the Archive of Modern Conflict in London.

2. British troops on the move at the Battle of the Somme.

3. German encampments behind the lines on the Western front.

4. German infantry collect water near the Western front.

5. German officers in a dugout at the Yser front in Belgium.

6. Massive fortifications at a German observation post on the Yser front in Belgium.

7. The toll of war: Dead British soldiers at a machine gun position on the Western front.

8. Austro-Hungarian soldiers at a mass grave on the Eastern front.

9. TECHNOLOGY AND WAR: A mobile French anti-aircraft gun.

10. Italian heavy guns at the front lines.

11. Pigeons were still widely employed during the war as a means of communication. Pictured, a British soldier carries a basket of messenger pigeons on the Western front.

12. A German pigeon loft at the Western front.

13. WWI saw the first widespread use of airplanes, as observers, bombers, and fighters. Pictured, an observation balloon floats over the Western front, seen from a passing airplane.

14. German officers gather near an observation balloon moored near the Western front.

15. A German plane crashed into the roof of a building.

16. A German plane after a crash landing. WRONG: It’s a British Airco DH.5.

17. German officers at an air training school in Hanover.

18. Officers of the Imperial German Air Service engage in an athletics competition.

19. AT SEA: The view from a German U-boat after sinking an Allied merchant vessel in the Atlantic Ocean.

20. Morning exercises on a Germany Navy warship.

21. A German navy diver in the water.

22. THE LANDSCAPE OF WAR: An allied aircraft (center) flies over the trenches and bomb craters of the Western front.

23. Trenches snake across the landscape of the Western front.

24. An aerial view from a British airplane shows bomb damage on the Western front.

25. An aerial view of trenches and bomb craters on the Western front.

26. German prisoners of war at Longueau.

27. BEHIND THE LINES: German officers relax at a party near the Western front.

28. An Austro-Hungarian soldier relaxes in a bunker.

29. A German officer reads in a chateau near the Western front.

30. A German Air Force officer poses on a dead boar.

31. German Air Force officers and friends at a picnic.

32. THE HOME FRONT: American soldiers model various gas mask designs at the Chemical Development Laborary in Philadelphia.

33. Workers test gas masks at the Chemical Development Laborary in Philadelphia.

34. A horse fitted with a gas mask at the Chemical Development Laboratory in Philadelphia.

35. Workers at the Brewery Road munitions factory in London.

36. Women work at a munitions factory in France.

37. A simulated battlefield: Trenches built at a training facility in Long Island City, N.Y.