Arma 3
4,923 ratings
Operation: TREBUCHET
File Size
203.453 MB
Sep 24, 2016 @ 4:28pm
Dec 27, 2019 @ 11:01pm
13 Change Notes ( view )

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Operation: TREBUCHET


Operation: TREBUCHET (OPTRE) was the last major UNSC offensive against the human insurrection before the first contact with the Covenant empire. Our mod will focus on the struggles of the common soldier rather than the elite spartan warriors, allowing you to experience the Halo universe from a new, brutal perspective. OPTRE is a total modification with the intent to bring the popular Halo Universe into a more realistic setting by introducing it into Arma 3.


If you want to get in contact with us or the OPTRE community in general we highly recommend joining our Discord[] or one of the communication channels linked on the right.


The work contained in this distribution is licensed under the Creative Commons Attribution-NonCommercial-NoDerivativs 3.0 Unported License. Please note that the above mentioned agreement gives the right to Article 2 Studios to waiver any of the conditions, therefore you can contact Article 2 Studios to obtain permission to modify our work.

It is forbidden to redistribute the content of this package by itself, or as part of another distribution, using the Steam Workshop by anyone other than Article 2 Studios.

You may not use the material for commercial purposes. This includes running this package on server instances that employ any monetization schemes, including, but not limited to, donate-reward systems. Bohemia Interactive's approval of your monetization scheme does not grant you rights to wave this clause.


Halo© Microsoft Corporation. Operation Trebuchet was created under Microsoft's "Game Content Usage Rules" using assets from Halo, and it is not endorsed by or affiliated with Microsoft.

Game Content Usage Rules[]
Popular Discussions View All (59)
Jul 8 @ 11:32pm
PINNED: Found a bug? POST IT HERE (v0.21)
Apr 25 @ 12:49pm
DEVS PLEASE READ! thank you <3
Jun 1 @ 1:39pm
What is next for operation trebuchet
< >
Snoob Jul 11 @ 8:23am 
Do your part!
-rep my profile!!
Jarle Jul 11 @ 2:25am 
Do your part!
-rep my profile!!
Z0FT Jul 10 @ 2:48pm 
Great mod, found a bug where the crew in the apcs stick out of the vehicle.
Redemption Jul 9 @ 11:37am 
Thanks @deadlyKenny!
DeadlyKenny Jul 9 @ 6:21am 
@redemption @sharkteeth the fix for that is coming but i believe sidemods like fireteam zulu fix the issue
Redemption Jul 2 @ 12:01pm 
@sharkteeth i to am having this problem!!! i can spawn pelicans in the eden editor put not in zues. really frustrating. anyone have a fix? google came up empty for me.
chakotay4949 Jun 28 @ 6:49pm 
any one know the script for the pelican crashing like in the trailer
dytv300009 Jun 28 @ 8:45am 
Hello, boss, where can I download UNSC Infinity.
trickshot_oo7 Jun 26 @ 11:08am 
Will we be getting the ODST helmet variants back at any stage?
J.Tucker Jun 14 @ 12:59pm 
@M3DEV Task Force Spartan has operations every Saturday and Fun Operations on Sundays. If you are interested please look at our website!