If you are looking for information related to a "PL.rar" file, this typically refers to a language version or localized modification of the game compressed in a RAR archive. Game Overview
Unlike the first game, Call of Duty 2 introduced a regenerating health system where you must take cover to recover from damage.
If you are trying to run an older version of the game (like one from a .rar archive) on modern hardware, you may encounter issues: Guide :: Technical solutions for Call of Duty 2.