Early in the war, Hamas propaganda videos showed well-drilled fighters in body armour and battle fatigues, their torsos wrapped with ammunition belts. One Palestinian source with knowledge of Hamas military tactics said personnel losses and the destruction of the communications network meant centralised decision-making had collapsed. Palestinian sources have confirmed the deaths of several leading Hamas military commanders. New recruits were also constantly joining Hamas' military wing, while the switch to guerrilla tactics had allowed the group to contain its losses, according to another source familiar with Hamas' tactics. An Israeli military official on Monday told Reuters that while a lot of Hamas military infrastructure, including tunnels, has been destroyed there was still much more to be done.