Quake Wars: Tactical Assault is a revamp of Enemy Territory: Quake Wars' core gameplay, with the intention of creating a grittier, more realistic environment than the base game, while still telling the story of the Strogg invasion of Earth. While Enemy Territory: Quake Wars tends to be a game of shoot first, often, and charge into the meatgrinder, Quake Wars: Tactical Assault strives to be more of a thinking man(or woman)'s game, where choosing your fights and positioning yourself to prevail carries the day.
Quake Wars: Tactical Assault v0.3.5 Hotfix 1 Corrects an issue introduced in QWTA v0.3.4 where a minority of Windows players would be unable to load the QWTA .dll files, causing a crash upon mod load.
do we need this if we run a linux server?
Yes, servers should always have the latest hotfix/patch/etc even if it's for a different platform. This lets other platforms pass client purity and your server do autodownload properly for other platforms.