Through coordination with the communities of others. Militias have and are very effective at fighting conventional standing armies. Look at the viet kongs, the anarchist militias in the Spanish Civil War, and the Ukrainian Black Army. Or the slave rebellion of Haiti. Even modern day, the Zapatistas hold their own against both the Cartels and the Mexican government.
Through coordination with the communities of others. Militias have and are very effective at fighting conventional standing armies. Look at the viet kongs, the anarchist militias in the Spanish Civil War, and the Ukrainian Black Army. Or the slave rebellion of Haiti. Even modern day, the Zapatistas hold their own against both the Cartels and the Mexican government.