1. Open the game and enter the main interface.
2. Click the "Faction" button on the left side of the game interface.
3. Select the legion you want to view in the pop-up legion list, such as Empire.
4. On the Legion page, click the "Unit" tab.
5. On the arms page, you can see all the available arms of the regiment. You can click on each arm to view its detailed information and arms tree.