At least one tribe, the Geln, strongly opposed attacking the Colonial Union, since humans were reasonably strong, distressingly tenacious and not especially principled when they felt threatened.
In John Scalzi's "The Ghost Brigades," a perspective emerges from the Geln tribe, which is notably against launching an attack on the Colonial Union. Their caution stems from a deep understanding of human resilience and combativeness when cornered. They recognize that humans possess a formidable strength and an unwavering determination, making them a challenging adversary in conflict.
This cautious stance highlights the complexities of interspecies relations and the varying approaches tribes take when considering war. The Geln tribe's insights reflect a broader theme of strategic contemplation, underscoring the potential consequences of underestimating an opponent driven by survival instincts.