Evidence on the consequences of war for community cohesion is mixed, pointing to both positive and negative effects of conflict. This study examines symmetry of force between warring actors as an explanation of heterogeneous conflict effects. Using survey data from 224 Colombian villages, I compare cohesion in communities exposed to asymmetric and symmetric conflicts, a guerrilla war between rebels and the state and a more conventional war between rebels and paramilitary groups, respectively. I find that symmetric war increases participation in community organizations, while asymmetric war decreases trust. Evidence suggests three mechanisms that explain these findings. Symmetric war increases cohesion (i) by spurring individuals to band together to cope with significant disruption of services and (ii) by strengthening group identities that map onto fairly clear wartime cleavages. Asymmetric war reduces cohesion (iii) by instilling fear and suspicion linked to wartime experiences of civilian collaboration and denunciations.