From NetFlix:

Utilizing vivid black-and-white animation in this Golden Globe winner for Best Foreign Language Film, director Ari Folman documents his quest to explore the memory gaps in his life during his service for the Israeli army in the Lebanese war of the early 1980s. Recounting several story vignettes based on recorded interviews with colleagues and friends, Folman explores the horrors of war and the curious coping mechanisms that mankind uses to survive and function under brutal circumstances.

Not everyone enjoys animantion. However, from the limited viewpoint of watching a Graphic Novel, “Waltz with Bahir” was for me captivating. Just watching the faces was enjoyable.

But these comments are superficial. For the historical background of the 1980 war in Lebanon and of this film and the various reactions to the film you could read the ample article in Wikipedia.

Just be prepared for the final portion in which the animation is replaced by actual film footage of the horror.