Hamas overwhelmed Israel’s border in October with something like a conventional military maneuver. Now, it acts as a guerrilla force, its fighters often disguised as civilians.

An analysis of battlefield videos released by Hamas and interviews with three Hamas members and scores of Israeli soldiers

Using civilian homes and infrastructure — including medical facilities, U.N. offices and mosques — to conceal fighters, tunnel entrances, booby-traps and ammunition stores;
Ambushing Israeli soldiers with small groups of fighters dressed as civilians, as well as using civilians, including children, to act as lookouts;

The video seems to show Hamas fighters, their faces blurred, sitting on patterned mats as they plan the attack. They use pen, paper and a digital tablet to draw simplistic maps detailing where they want to plant a set of roadside mines.
“We ask, O Lord, for the ambush to achieve its goals — let us kill your enemies, the Jews,” the narrator says.