To which block is Eliezer assigned upon his arrival at Buna?

Eliezer is assigned to Block 53 upon his arrival at Buna, which holds significance in the narrative as it serves as a central location that reflects the harsh realities of life in the concentration camp. Block 53 represents the dehumanization and suffering that Eliezer and other inmates endure. The specific numbering of the block is important for illustrating the bureaucratic and systematic nature of the camp's operation, where groups of prisoners are organized and designated to specific locations in a dispassionate manner. This detail also reinforces the theme of survival and the daily struggles faced by the inmates, emphasizing their loss of identity and individuality within the camp system.