As the Army and Marine Corps work to update their doctrine and training centers to better prepare soldiers and Marines for urban combat, troops on the ground will need different tools for the fight.

From vehicles to weapons and communications gear, here are a few items that could make troops more effective, from the Modern War Institute:

Whaling harpoon gun & winch cable

Mount the equipment to a military vehicle so troops can use the large grappling hook to haul downed vehicles out of their way.

Helicopter-style helmet for Infantry Fighting Vehicle weapons systems

The helicopter pilots’ weapons move with their vision, and their helmets include a display system that provides instant information.

Give that capability to ground vehicle operators.

Industrial foam thrower

Instead of having to enter and clear tunnels and holes prevalent across the urban landscape, soldiers could seal entrances shut with a quick-drying sealing foam.

Tear Gas

A tool in the kit of civilian law enforcement is off the table for soldiers at war, due to treaties banning chemical weapons.

But it wasn’t always so. From World War II through Vietnam, soldiers used the gas to flush enemies out of barricaded areas.

Ballistic shields

Like tear gas, this is another item available to law enforcement officials.

The shields are used when police departments employ Special Weapons and Tactics teams to deal with armed threats. Most shields can withstand a 7.62mm bullet and would be helpful when troops are in exposed roads and rooftops.

Disposable drone swarms

Currently under development by the Defense Advanced Research Projects Agency, or DARPA, small beer can-sized drones that can swarm a target, collect data or disrupt operations have been successfully tested via air drop in open desert areas.

The DARPA project aims to have these devices capable of operating in an urban environment.

Car battery recharging cable

Getting power and recharging batteries is key for modern battlefield equipment.

Guess what there are a lot of in cities? Cars.

A simple adapter could allow soldiers to recharge as they move through such terrain.

Source: Maj. John W. Spencer at the Modern War Institute Urban Warfare Project