However, the .rar format and the splitting process are not inherently illegal. Many legitimate open-source projects, game mods,
The most common scenario involving this file is the "Incomplete Set." A user finds part 1, eager to access the content, only to find that parts 2 through 5 are missing, dead links, or hosted on a premium file locker that requires a subscription. This has led to a unique digital subculture of "re-up requests," where users plead with the original uploader to restore the missing links.
In the late 1990s and early 2000s, file transfer protocols (FTP) and early peer-to-peer networks often had file size limits. Email attachments were capped at a few megabytes. Hard drives were measured in gigabytes, not terabytes. If you wanted to transfer a 4GB game or a 700MB movie, you couldn't just upload it as one block. The transfer would likely fail halfway through, corrupting the entire file.
The term "Legion" carries significant weight in various subcultures. Historically, it refers to a large military force, but in the digital realm, it has been co-opted by gaming communities (the Mass Effect series features a popular Geth character named Legion) and, more pertinently, by cracking and hacking groups. In the early 2000s, "Legion" was a common handle or group tag attached to software cracks, game mods, or ripped media. If you saw LEGION in a filename, it was often a signature—a stamp of quality or a claim of origin from a specific release group.