Arma 3
3,733 ratings
Operation: TREBUCHET
File Size
153.268 MB
Sep 24, 2016 @ 4:28pm
Apr 24 @ 5:19am
12 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 (33)
Apr 23 @ 5:50am
PINNED: Found a bug? POST IT HERE (v0.20)
Article 2 Studios
Apr 22 @ 11:20pm
Bring Back the Frigates Please
Apr 20 @ 11:26pm
Missing assets.
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[XOF] nick_ross2011 55 minutes ago 
are the insurectionist "Battle jumpers" supposed to be like rebel ODST troops??
Sain 12 hours ago 
My fucking god people, like I understand you guys are upset about things being missing or zeus having missing or messed up factions, but Article 2 had to push this out due to a modder I used to have respect for forcing them to remove his assets from the game. Stop blaming them or telling them to roll it back, because it can't happen.
Cameron Parris Apr 24 @ 6:40am 
The new SMGs are actually almost done apparently. If your curious about the progress of certain things just join the Discord for A2S.
aviatorEngineer Apr 23 @ 7:06pm 
@Oak862 SMGs have already been explained, they were removed for the same reasons as Frigates and Longswords.
Oak862 Apr 23 @ 5:49pm 
All the ODST Smg are replaced with placeholders(Victors)How do i fix this because they used to be fine
Cameron Parris Apr 22 @ 8:44am 
They already are. Get the Mod First Contact for OPTRE. They don't really run or act or speak like Elites last i checked, but they look like them. So theres that.
The Jelly Man Apr 22 @ 5:01am 
Will the Covenant forces ever be added to this mod or will it be a different mod?
Jimbo ☭ ͜ʖ ☭ Apr 21 @ 4:37pm 
cant use units in zues plz roll back
Cameron Parris Apr 21 @ 2:00pm 
When i updated the mod to play it, it tells me its corruptted and won't work. Need a fix to play my favorite mod again!
Lupus Infernum Apr 21 @ 9:27am 
Last update f***** up spawning units in Zues. 10/10 for backwards progress