US Marines are readying for a flood of new drones and the headaches that come with them

A Neros Archer drone at the Modern Day Marine symposium in Washington, D.C. on Tuesday.

Lance Cpl. Kiara Rawls/US Marine Corps

• Marines face a new strain as tens of thousands of drones are set to enter the force.
• Lithium batteries require special measures, and can catch fire if stored improperly.
• Marines say they need more drones that can speak a universal language.

The Marine Corps is preparing to field tens of thousands more drones for troops to watch and attack enemy positions...