Since "Map Pack 634" is not an official Relic Entertainment release, it is almost certainly a popular community compilation (often circulated on sites like ModDB or fan forums) containing hundreds of custom skirmish and multiplayer maps.
Before extracting the files, you must determine which version of Company of Heroes you are running. This specific map pack is usually designed for the (original disc or non-Steam "New Steam Version" legacy beta), not the modern Company of Heroes 3 . company of heroes map pack 634 maps better
634 hand-picked, cleaned, and balanced maps for Company of Heroes . Better lanes. Better spawns. Better pathfinding. No junk. Since "Map Pack 634" is not an official
A highly stable, classic pack including community favorites like Morning Glory Vire Center Steam Workshop Collections: 634 hand-picked, cleaned, and balanced maps for Company
If you want to experience Company of Heroes at its absolute zenith, installing a massive compilation like the 634 map pack is non-negotiable. It shifts the game away from predictable, meta-heavy routines and returns it to its roots: an unpredictable, highly tactical sandbox where the best field commander wins.
Installing one of these massive compilations is straightforward. While different packs may have slightly different instructions, the core process is the same.