The Sons of Isaac are masters of warfare in mountainous terrain akin to their Chapter home-world of Scotia Canna. Using heavy armor, the Sons of Isaac shell the fortifications and mental fortitude of their foes before a sweeping assault to eliminate any enemies of the Imperium that still breath.
The Sons of Isaac are culturally a peoples Chapter, seeking to protect the populace and even laying down their own lives for baseline humans. This cultural connection to the people of the Imperium is shown in their integration with the populace of Scotia Canna and their belief in who the Emperor is. Unlike their Brothers the Black Templars and the Ecclesiarchy, the Sons of Isaac see the Emperor not as a God or just a man, but the living embodiment of humanity.